U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Subject term carbon Remove constraint Subject term: carbon
Start Over

Search

131,059  Search Results

« Previous | 1 - 100 of 131,059 |
Number of results to display per page

Search Results

1. "Decarbonization" of an imino-N-heterocyclic carbene ligand via benzyl migration from hafnium

Author:
Dipesh Prema; Yohan L. N. Mathota Arachchige; Rex E. Murray; LeGrande M. Slaughter
Source:
Chemical communications 2015 v.51 no.31 pp. 6753-6756
ISSN:
1359-7345
Subject:
alkenes; carbon; hafnium; ligands; polymerization
Abstract:
... An imino N-heterocyclic carbene underwent three sequential benzyl migrations upon reaction with tetrabenzylhafnium, resulting in complete removal of the carbene carbon from the ligand. The resulting eneamido-amidinato hafnium complex showed alkene polymerization activity comparable to that of a precatalyst containing the intact iminocarbene ligand. ...
Handle:
10113/62939
DOI:
10.1039/C5CC01560J

2.   Effect of veterinary oxytetracycline on functional diversity of soil microbial community

Author:
W. Liu; N. Pan; W. Chen; W. Jiao; M. Wang
Source:
Plant, Soil and Environment v.58 no.7 pp. 295-301
ISSN:
1214-1178
Subject:
Trifolium repens; carbon; color; environment; functional diversity; greenhouse experimentation; oxytetracycline; soil; soil microorganisms; sugars; vegetation
Abstract:
... Effects of oxytetracycline (OTC) on the functional diversity of soil microbial community with or without vegetation were analyzed in a 7-week greenhouse pot experiment by use of Biolog-Eco plate. Results showed that along with the increase of OTC, average well color development (AWCD) values increased with the peak at 200 ppm OTC, and the utilization of sugar and its derivatives enhanced. The Shan ...
DOI:
10.17221/430/2011-pse

3. 'Are fish what eat' all year round?

Author:
Perga, M.E.; Gerdeaux, D.
Source:
Oecologia 2005 v.144 no.4 pp. 598-606
ISSN:
0029-8549
Subject:
lakes; Coregonus; freshwater fish; wildlife food habits; stable isotopes; carbon; nitrogen content; muscles; liver; seasonal variation; animal growth; Switzerland; France
DOI:
10.1007/s00442-005-0069-5

4. 'Decomposer' Basidiomycota in Arctic and Antarctic ecosystems

Author:
Ludley, K.E.; Robinson, C.H.
Source:
Soil biology & biochemistry 2008 v.40 no.1 pp. 11-29
ISSN:
0038-0717
Subject:
ecological function; soil fungi; community structure; tundra soils; cold soils; climate change; carbon; species diversity; microbial detection; biodegradation; Basidiomycota; Antarctic region; Arctic region
Abstract:
... Current knowledge concerning 'decomposer' Basidiomycota in Arctic and Antarctic ecosystems is based on two sources: (a) collections and surveys of basidiomata, which have resulted in high-quality catalogues of species, although much of the species' distribution and ecology are tentative and (b) isolations from soils and plant litter which typically result in a “low incidence of basidiomycetes” [Do ...
DOI:
10.1016/j.soilbio.2007.07.023

5. 'Lake Gorgana' - A paleolake in the Lower Danube Valley revealed using multi-proxy and regionalisation approaches

Author:
Dirk Nowacki; Carolin Clara Marie Langan; Annette Kadereit; Anna Pint; Jürgen Wunderlich
Source:
Quaternary international 2019 v.511 pp. 107-123
ISSN:
1040-6182
Subject:
carbon; floodplains; human population; humans; isotopes; lakes; limnology; nitrogen; paleoclimatology; sediments
Abstract:
... Geoarchaeological research at the archaeological site of Mǎgura Gorgana should elucidate the environmental setting Neolithic and Copper Age communities were faced with, when they settled along the Lower Danube Valley, Romania. This should enable a better understanding of human-environment interactions, the natural preconditions of a trading network, as well as the living conditions of the human po ...
DOI:
10.1016/j.quaint.2018.09.021

6. (+)- and (−)-Preuisolactone A: A Pair of Caged Norsesquiterpenoidal Enantiomers with a Tricyclo[4.4.0¹,⁶.0²,⁸]decane Carbon Skeleton from the Endophytic Fungus Preussia isomera

Author:
Lu-Lin Xu; Hai-Li Chen; Ping Hai; Yuan Gao; Chuan-Dong Xie; Xiao-Long Yang; Ikuro Abe
Source:
Organic letters 2019 v.21 no.4 pp. 1078-1081
ISSN:
1523-7052
Subject:
Micrococcus luteus; Preussia; X-ray diffraction; antibacterial properties; biochemical pathways; carbon; chemical reactions; decane; enantiomers; endophytes; fungi; spectroscopy
Abstract:
... A pair of enantiomeric norsesquiterpenoids, (+)- and (−)-preuisolactone A (1) [(+)-1 and (−)-1)] featuring an unprecedented tricyclo[4.4.0¹,⁶.0²,⁸]decane carbon scaffold were isolated from Preussia isomera. Their structures were determined by spectroscopic and computed methods and X-ray crystallography. Compounds (+)-1 and (−)-1 are two rare naturally occurring sesquiterpenoidal enantiomers. A pla ...
DOI:
10.1021/acs.orglett.8b04123

7. (+)-4-epi-α-Bisabolol as a Major Sesquiterepene Constituent in the Leaves of Two Rosa rugosa Hybrids, Martin Frobisher and Vanguard

Author:
Yasuyuki HASHIDOKO; Keiko ENDOH; Toshihiro KUDO; Satoshi TAHARA
Source:
Bioscience, biotechnology, and biochemistry 2000 v.64 no.4 pp. 907-910
ISSN:
1347-6947
Subject:
Rosa rugosa; biochemistry; biogenesis; biotechnology; carbon; hybrids; leaves; sesquiterpenoids; trichomes
Abstract:
... During an investigation of the sesquiterpene phases and contents in leaves of several Rosa rugosa hybrids (hybrid rugosas), Martin Frobisher and Vanguard were found to accumulate a large amount of (+)-4-epi-α-bisabolol (1) as a single constituent. Although glandular trichomes of Martin Frobisher on the leaves are dense, this R. rugosa hybrid produces none of the carota-1,4-dienaldehyde (2) or bisa ...
DOI:
10.1271/bbb.64.907

8. (+)-Sorangicin A: evolution of a viable synthetic strategy

Author:
Amos B. Smith III; Shuzhi Dong; Richard J. Fox; Jehrod B. Brenneman; John A. Vanecko; Tomohiro Maegawa
Source:
Tetrahedron 2011 v.67 no.51 pp. 9809-9828
ISSN:
0040-4020
Subject:
antibiotics; carbon; chemical structure; isomerization; octane
Abstract:
... An effective, asymmetric total synthesis of the antibiotic (+)-sorangicin A (1) has been achieved. Central to this venture was the development of first- and second-generation syntheses of the signature dioxabicyclo[3.2.1]octane core, the first featuring chemo- and stereoselective epoxide ring openings facilitated by a Co₂(CO)₆–alkyne complex, the second involving a KHMDS-promoted epoxide ring form ...
DOI:
10.1016/j.tet.2011.09.035
PubMed:
22247573
PubMed Central:
PMC3254116

9. (001) Facet-Dominated Hierarchically Hollow Na₂Ti₃O₇ as a High-Rate Anode Material for Sodium-Ion Capacitors

Author:
Hao Chen; Yuanke Wu; Jingjing Duan; Renming Zhan; Wei Wang; Min-Qiang Wang; Yuming Chen; Maowen Xu; Shu-Juan Bao
Source:
ACS applied materials & interfaces 2019 v.11 no.45 pp. 42197-42205
ISSN:
1944-8252
Subject:
anodes; batteries; carbon; energy; energy density
Abstract:
... Sodium-ion capacitors (SICs) have shown great potential to combine the merits of high-power capability of traditional capacitors and high energy capability of batteries. However, the sluggish kinetics and inferior stability of conventional sodium-ion storage anode materials are major challenges for the practical utilization of SICs. In this work, interconnected urchin-like hollow Na₂Ti₃O₇ (Na₂Ti₃O ...
DOI:
10.1021/acsami.9b14560

10. (101) Plane-Oriented SnS2 Nanoplates with Carbon Coating: A High-Rate and Cycle-Stable Anode Material for Lithium Ion Batteries

Author:
Zhang Zijia; Zhao Hailei; Du Zhihong; Chang Xiwang; Zhao Lina; Du Xuefei; Li Zhaolin; Teng Yongqiang; Fang Jiejun; Świerczek Konrad
Source:
ACS applied materials & interfaces 2017 v.9 no.41 pp. 35880-35887
ISSN:
1944-8252
Subject:
anodes; carbon; coatings; electrical conductivity; lithium; lithium batteries; microstructure; nanomaterials; polyethylene glycol; sulfur; surfactants; tin
Abstract:
... Tin disulfide is considered to be a promising anode material for Li ion batteries because of its high theoretical capacity as well as its natural abundance of sulfur and tin. Practical implementation of tin disulfide is, however, strongly hindered by inferior rate performance and poor cycling stability of unoptimized material. In this work, carbon-encapsulated tin disulfide nanoplates with a (101) ...
DOI:
10.1021/acsami.7b11113

11. (111) vertical-type two-dimensional hole gas diamond MOSFETs with hexagonal trench structures

Author:
Jun Tsunoda; Masayuki Iwataki; Nobutaka Oi; Aoi Morishita; Astushi Hiraiwa; Hiroshi Kawarada
Source:
Carbon 2021 v.176 pp. 349-357
ISSN:
0008-6223
Subject:
carbon; electric potential difference; electronics; transistors
Abstract:
... Low-loss power semiconductor devices realize the efficient control and miniaturization of inverters and greatly contribute to the development of power electronics. N-channel vertical-type power semiconductor devices that simultaneously demonstrate a low resistance and high withstand voltage using wide bandgap semiconductors have been developed. However, p-channel vertical power semiconductor devic ...
DOI:
10.1016/j.carbon.2021.01.014

12. (129)Xe NMR studies of morphology and accessibility in porous biochar from almond shells

Author:
M. Farina; M. Mauri; G. Patriarca; R. Simonutti; K. T. Klasson; H. N. Cheng
Source:
RSC Advances 2016 v.6 no.105 pp. 103803-103810
ISSN:
2046-2069
Subject:
adsorption; almond shells; biochar; byproducts; carbon; diffusivity; filtration; heat treatment; nitrogen; nuclear magnetic resonance spectroscopy; porous media; scanning electron microscopy; xenon
Abstract:
... Micro and mesoporous materials are often used in catalysis, purification, composite filler, and other applications. Almond shell is an important agricultural byproduct that can be transformed to microporous and mesoporous carbon. In this work, we produced biochar from almond shell using a thermal treatment procedure in an inert atmosphere and characterized the pores with nitrogen adsorption, envir ...
Handle:
10113/5695379
DOI:
10.1039/C6RA18104J

13. (3 + 2)-Annulation of p-Quinamine and Aryne: A Strategy To Construct the Multisubstituted Hydrocarbazoles

Author:
Xu Dengyu; Zhao Yulong; Song Dengpeng; Zhong Zhuliang; Feng Shangbiao; Xie Xingang; Wang Xiaolei; She Xuegong
Source:
Organic letters 2017 v.19 no.13 pp. 3600-3603
ISSN:
1523-7052
Subject:
carbon; chemical reactions; chemical structure; organic compounds
Abstract:
... A strategy for the synthesis of multisubstituted hydrocarbazoles has been developed through (3 + 2)-annulation of p-quinamines and arynes. In this way, new analogs of hydrocarbazoles with quaternary carbon center can be synthesized in satisfactory yield under mild conditions. Furthermore, this (3 + 2)-annulation can be easily scaled-up, and the products can be modified through simple transformatio ...
DOI:
10.1021/acs.orglett.7b01578

14. (4 + 2) and (2 + 2) Cycloadditions of Benzyne to C60 and Zig-Zag Single-Walled Carbon Nanotubes: The Effect of the Curvature

Author:
Martínez Juan Pablo; Langa Fernando; Bickelhaupt F. Matthias; Osuna Sílvia; Solà Miquel
Source:
The Journal of Physical Chemistry C 2016 v.120 no.3 pp. 1716-1726
ISSN:
1932-7455
Subject:
carbon; carbon nanotubes; chemoselectivity; cycloaddition reactions; deformation; energy; heat production; models; moieties; reaction mechanisms
Abstract:
... Addition of benzyne to carbon nanostructures can proceed via (4 + 2) (1,4-addition) or (2 + 2) (1,2-addition) cycloadditions depending on the species under consideration. In this work, we analyze by means of density functional theory (DFT) calculations the reaction mechanisms for the (4 + 2) and (2 + 2) cycloadditions of benzyne to nanostructures of different curvature, namely, C₆₀ and a series of ...
DOI:
10.1021/acs.jpcc.5b11499

15. (4+1) vs (4+2): Catalytic Intramolecular Coupling between Cyclobutanones and Trisubstituted Allenes via C–C Activation

Author:
Zhou Xuan; Dong Guangbin
Source:
Journal of the American Chemical Society 2015 v.137 no.42 pp. 13715-13721
ISSN:
1520-5126
Subject:
carbon; enantiomers; ligands
Abstract:
... Herein we describe a rhodium-catalyzed (4+1) cyclization between cyclobutanones and allenes, which provides a distinct [4.2.1]-bicyclic skeleton containing two quaternary carbon centers. The reaction involves C–C activation of cyclobutanones and employs allenes as a one-carbon unit. A variety of functional groups can be tolerated, and a diverse range of polycyclic scaffolds can be accessed. Excell ...
DOI:
10.1021/jacs.5b09799
PubMed:
26440740
PubMed Central:
PMC4884657

16. (5E/Z,7E,9)-Decatrien-2-ones, Pineapple-like Flavors from Fomitopsis betulina—Structure Elucidation and Sensorial Properties

Author:
Miriam Grosse; Tim Pendzialeck; Jörg Fohrer; Ralf G. Berger; Ulrich Krings
Source:
Journal of agricultural and food chemistry 2019 v.68 no.38 pp. 10329-10335
ISSN:
1520-5118
Subject:
Fomitopsis; carbon; chemical reactions; energy; flavor; food chemistry; fungal culture; mass spectrometry; mushrooms; nuclear magnetic resonance spectroscopy; odors; pineapples
Abstract:
... During the cultivation of the edible mushroom Fomitopsis betulina on agro-industrial side streams, a pleasant flavor strongly reminiscent of pineapple was perceived. Aroma extract dilution analyses identified two flavor components with a distinct pineapple odor. On the basis of mass spectrometric data, a Wittig reaction of (E)-penta-2,4-dien-1-yltriphosphonium bromide with ethyl levulinate was con ...
DOI:
10.1021/acs.jafc.9b06105

17. (Acetoxymethyl)methylphenylgerman: Synthese, thermisches Verhalten und olfaktorische Eigenschaften / (Acetoxymethyl)methylphenylgermane: Synthesis, Thermal Behaviour and Olfactoric Properties

Author:
Reinhold Tacke; Frank Wiesenberger
Source:
Zeitschrift für Naturforschung 2014 v.46 no.3 pp. 275-279
ISSN:
0932-0776
Subject:
acetates; carbon; half life; odors; perfumes; silane; silicon; thermal stability
Abstract:
... (Acetoxymethyl)methylphenylgermane [PhMeGe(H)CH₂OAc, lc] was synthesized by a five-step synthesis starting from trichloro(chloromethyl)germane [Cl₃GeCH₂Cl → PhCl₂GeCH₂Cl → PhMeGe(Cl)CH₂Cl → PhMeGe(OAc)CH₂OAc → PhMeGe(H)CH₂OH → PhMeGe(H)CH₂OAc]. The germane le and its carbon analogue PhMeC(H)CH₂OAc (la) are thermally stable (solutions in C₆D₆; 160 °C, 48 h), whereas the structurally analogous silan ...
DOI:
10.1515/znb-1991-0303

18. (Bio)degradation of glyphosate in water-sediment microcosms – A stable isotope co-labeling approach

Author:
Shizong Wang; Bettina Seiwert; Matthias Kästner; Anja Miltner; Andreas Schäffer; Thorsten Reemtsma; Qi Yang; Karolina M. Nowak
Source:
Water research 2016 v.99 pp. 91-100
ISSN:
0043-1354
Subject:
amino acids; carbon; detection limit; glyphosate; guidelines; metabolites; microbial growth; mineralization; nitrogen; risk; sediments; stable isotopes; starvation
Abstract:
... Glyphosate and its metabolite aminomethylphosphonic acid (AMPA) are frequently detected in water and sediments. Up to date, there are no comprehensive studies on the fate of glyphosate in water-sediment microcosms according to OECD 308 guideline. Stable isotope co-labeled 13C315N-glyphosate was used to determine the turnover mass balance, formation of metabolites, and formation of residues over a ...
DOI:
10.1016/j.watres.2016.04.041

19. (Micro)plastic crisis: Un-ignorable contribution to global greenhouse gas emissions and climate change

Author:
Maocai Shen; Wei Huang; Ming Chen; Biao Song; Guangming Zeng; Yaxin Zhang
Source:
Journal of cleaner production 2020 v.254 pp. 120138
ISSN:
0959-6526
Subject:
carbon; carbon dioxide fixation; climate; climate change; cradle-to-grave; durability; energy conversion; environmental impact; equipment; forests; global carbon budget; greenhouse gas emissions; greenhouse gases; land use; manufacturing; medicine; oil and gas industry; plastics; pollution; raw materials; recycling; temperature; toxicity; transportation; uncertainty; uncertainty analysis; waste treatment; wastes
Abstract:
... The rapid development of plastic industrials has created a variety of plastic products, causing revolutionary progress in chemistry, physics, biology, and medicine. Large-scale production and applications of plastics increase their possibility of entering the environment. Previous environmental impact studies typically focused on the toxicity, behavior and fate; limited attention was paid on green ...
DOI:
10.1016/j.jclepro.2020.120138

20. (N, B) Dual Heteroatom-Doped Hierarchical Porous Carbon Framework for Efficient Electroreduction of Carbon Dioxide

Author:
Chen Jia; Wenhao Ren; Xianjue Chen; Wanfeng Yang; Chuan Zhao
Source:
ACS sustainable chemistry & engineering 2020 v.8 no.15 pp. 6003-6010
ISSN:
2168-0485
Subject:
carbon; carbon dioxide; catalysts; catalytic activity; electrochemistry; freeze drying; heat
Abstract:
... A versatile salt–sugar method is developed to synthesize a (N, B) dual heteroatom-doped three-dimensional (3D) hierarchical porous carbon network. Through freeze drying and a two-stage heating process, the N and B atoms can be atomically dispersed into the carbon structure with high doping levels (N, 10.2 at. %; B, 8.86 at. %). The as-prepared metal-free catalyst exhibit a high CO₂-to-CO Faradaic ...
DOI:
10.1021/acssuschemeng.0c00739

21. (Non-)Kolbe Chemistry Going with the Flow: The Continuous Electrolysis of Biogenic Acids

Author:
Nils Kurig; Jérôme Meyers; F. Joschka Holzhäuser; Stefan Palkovits; Regina Palkovits
Source:
ACS sustainable chemistry & engineering 2020 v.9 no.3 pp. 1229-1234
ISSN:
2168-0485
Subject:
batch systems; carbon; electrochemistry; electrolysis; electrosynthesis; energy; green chemistry; levulinic acid; three-dimensional printing
Abstract:
... Aiming at a circular carbon economy, electrosynthesis is gaining in importance. The conversion of bioderived materials using green electrons from renewable energy sources tackles challenges like fluctuating energy production and the integration into the already existing supply networks. Herein, we discuss concepts for transforming 150-year old Kolbe chemistry into flow processes. In a recirculatio ...
DOI:
10.1021/acssuschemeng.0c06982

22. (Non-)Kolbe electrolysis in biomass valorization – a discussion of potential applications

Author:
F. Joschka Holzhäuser; Joel B. Mensah; Regina Palkovits
Source:
Green chemistry 2020 v.22 no.2 pp. 286-301
ISSN:
1463-9270
Subject:
bioeconomics; biomass; biorefining; carbon; carboxylic acids; circular economy; electrochemistry; electrolysis; energy; green chemistry; liquids; raw materials; supply chain
Abstract:
... Driven by the goal of a circular economy, the importance of renewable energies and sustainable sources of raw materials is steadily increasing. The electrochemical conversion of biomass-based compounds into liquid energy sources and basic chemicals enables the direct combination of renewable energies with sustainable carbon sources. A variety of carboxylic acids are efficiently accessible from bio ...
DOI:
10.1039/c9gc03264a

23. (S)-Threonine/α,α-(S)-diphenylvalinol-derived chiral ionic liquid: an immobilized organocatalyst for asymmetric syn-aldol reactions

Author:
Natalia A. Larionova; Alexandr S. Kucherenko; Dmitry E. Siyutkin; Sergei G. Zlotin
Source:
Tetrahedron 2011 v.67 no.10 pp. 1948-1954
ISSN:
0040-4020
Subject:
aldehydes; carbon; catalysts; chemical reactions; enantiomers; heterocyclic compounds; ionic liquids; ketones
Abstract:
... Chiral ionic liquids containing (S)- or (R)-threonine amide and α,α-(S)-diphenylvalinol units were synthesized In the presence of the (S)-threonine-derived catalyst reactions between ketones with secondary carbon atom(s) at the α-position with respect to the carbonyl group and aromatic (heteroaromatic) aldehydes afforded the corresponding syn-aldols in high yields (up to 99%) and with high diaster ...
DOI:
10.1016/j.tet.2011.01.017

24. (Sprayed) concrete production in life cycle assessments: a systematic literature review

Author:
Marcella Ruschi Mendes Saade; Alexander Passer; Florian Mittermayr
Source:
international journal of life cycle assessment 2020 v.25 no.2 pp. 188-207
ISSN:
0948-3349
Subject:
carbon; cement; concrete; construction materials; databases; environmental impact; environmental performance; life cycle assessment; manufacturing; models
Abstract:
... PURPOSE: The carbon intensity that accompanies concrete manufacturing has been widely investigated. However, depending on the intended use, concrete’s embedded materials’ quantities can change significantly, affecting its environmental performance. Seldom investigated, sprayed concrete’s impact differs from that of typical ready mixed concrete, which justifies a differentiated inspection. Our goal ...
DOI:
10.1007/s11367-019-01676-w

25. (UV/Oxidative) dual curing polyurethane dispersion from cardanol based polyol: Synthesis and characterization

Author:
Vikash Mishra; Jatin Desai; Kalpesh I. Patel
Source:
Industrial crops and products 2018 v.111 pp. 165-178
ISSN:
0926-6690
Subject:
Fourier transform infrared spectroscopy; acetone; acid value; carbon; catalysts; coatings; color; epoxides; gels; nuclear magnetic resonance spectroscopy; phosphine; physicochemical properties; polyols; polyurethanes; propionic acid; solvents; stable isotopes; viscosity
Abstract:
... This study reports the synthesis and property evaluation of UV/oxidative dual curing waterborne polyurethane dispersion prepared from cardanol-based polyol using different mode of curing. Cardanol-based polyol was prepared by reacting epoxidized cardanol with itaconic acid in presence of triphenyl phosphine catalyst. Structures of cardanol-based intermediates (both epoxidized cardanol and polyol) ...
DOI:
10.1016/j.indcrop.2017.10.015

26. (±)-CSA catalyzed Friedel–Crafts alkylation of indoles with 3-ethoxycarbonyl-3-hydoxyisoindolin-1-one: an easy access of 3-ethoxycarbonyl-3-indolylisoindolin-1-ones bearing a quaternary α-amino acid moiety

Author:
Anvita Srivastava; Shivendra Singh; Sampak Samanta
Source:
Tetrahedron letters 2013 v.54 pp. 1444-1448
ISSN:
0040-4039
Subject:
alkylation; amino acids; carbon; chemical structure; indoles; synthesis; temperature
Abstract:
... For the first time, a very simple, efficient, mild, catalytic, and one-step procedure for the synthesis of a series of new 3-ethoxycarbonyl-3-indolylsubstituted-isoindol-1-one derivatives has been achieved via a Friedel–Crafts alkylation of indoles with 3-hydroxy-3-ethoxycarbonylisoindolin-1-one at room temperature using easily available inexpensive camphor-10-sulfonic acid as an organocatalyst. T ...
DOI:
10.1016/j.tetlet.2013.01.010

27. (±)-Licarin A and its semi-synthetic derivatives: In vitro and in silico evaluation of trypanocidal and schistosomicidal activities

Author:
Vanderlisa Rita Meleti; Viviane Rodrigues Esperandim; Luzio Gabriel Bocalon Flauzino; Anna Helena Prizantelli; Lucas Antônio de Lima Paula; Lizandra Guidi Magalhães; Wilson Roberto Cunha; Rosângela da Silva Laurentiz; Ana Paula da Rocha Pissurno; N.P. Dhammika Nanayakkara; Ana Carolina Pereira; Jairo Kenupp Bastos; Renato Luis Tâme Parreira; Renato Pereira Orenha; Márcio Luis Andrade e Silva
Source:
Acta tropica 2020 v.202 pp. 105248
ISSN:
0001-706X
Subject:
Chagas disease; Schistosoma mansoni; Trypanosoma cruzi; adults; carbon; computer simulation; etiological agents; in vitro studies; lignans; methylation; mortality; nuclear magnetic resonance spectroscopy; peroxidase; schistosomiasis; stable isotopes; viability
Abstract:
... This paper reports the synthesis of (±)-licarin A 1, a dihydrobenzofuran neolignan, resultant of an oxidative coupling reaction of isoeugenol and horseradish peroxidase (HRP) enzyme. Following, three semi-synthetic derivatives from this compound were obtained: benzylated (±)-licarin A 2, methylated (±)-licarin A 3 and acetylated (±)-licarin A 4. After structural elucidation and assignment by Nucle ...
DOI:
10.1016/j.actatropica.2019.105248

28. (±)-Rubioncolin D, a pair of enantiomeric naphthohydroquinone dimers from Rubia oncotricha

Author:
Si-Meng Zhao; Zhe Wang; Xiao-Qiang Chen; Mao-Bo Huang; Ning-Hua Tan
Source:
Tetrahedron letters 2017 pp. -
ISSN:
0040-4039
Subject:
Rubia; carbon; chemical reactions; chemical structure; chromatography; circular dichroism spectroscopy; cytotoxicity; neoplasms; organic compounds; spectral analysis; stereochemistry
Abstract:
... A pair of novel enantiomeric naphthohydroquinone dimers with an unprecedented spiro[4.5] carbon core, (±)-rubioncolin D (1), were isolated from Rubia oncotricha. The racemic mixture of 1 was separated by chiral column chromatography. Their structures and stereochemistry were elucidated by extensive spectroscopic analysis and electronic circular dichroism calculation. Both compounds (+)-1 and (-)-1 ...
DOI:
10.1016/j.tetlet.2017.06.063

29. (±)-hyperzewalsins A−D, four pairs of nor-monocyclic polyprenylated acylphloroglucinols with immunosuppressive activity from hypericum przewalskii maxim

Author:
Yulin Duan; Pengfei Bu; Shuangshuang Xie; Yi Guo; Zhengyi Shi; Changxing Qi; Yonghui Zhang
Source:
Phytochemistry 2021 v.187 pp. 112779
ISSN:
0031-9422
Subject:
Hypericum; carbon; circular dichroism spectroscopy; decarboxylation; immunosuppression; mice; plant biochemistry; splenocytes
Abstract:
... Three pairs of previously undescribed 2,3-nor-monocyclic polyprenylated acylphloroglucinols (MPAPs), (±)-hyperzewalsins A−C, a pair of 1,2,3,4-nor-MPAPs, (±)-hyperzewalsins D, along with one undescribed precursor, hyperzewalsin E, were isolated and identified from the aerial parts of Hypericum przewalskii Maxim. (Hypericaceae), and their structures were confirmed by extensive spectroscopic analyse ...
DOI:
10.1016/j.phytochem.2021.112779

30. (−)-5,6-Dehydrocamphor from the antifungal essential oil of Zuccagnia punctata

Author:
Sandra L. Álvarez; Adriana Cortadi; Miguel A. Juárez; Elisa Petenatti; Felix Tomi; Joseph Casanova; Catalina M. van Baren; Susana Zacchino; Roser Vila
Source:
Phytochemistry letters 2012 v.5 no.1 pp. 194-199
ISSN:
1874-3900
Subject:
Microsporum gypseum; Zuccagnia; aerial parts; antifungal properties; carbon; essential oils; gas chromatography-mass spectrometry; hydrodistillation; keratinophilic fungi; leaves; minimum inhibitory concentration; monoterpenoids; nuclear magnetic resonance spectroscopy; oils; stable isotopes; trichomes
Abstract:
... The essential oils from aerial parts of nine populations of Zuccagnia punctata Cav. (Fabaceae) were obtained by hydrodistillation and analyzed by GC–FID, GC–MS and ¹³C NMR. A total of 80 constituents, mainly oxygenated monoterpenes, were identified representing from 79.0 to 95.2% of the total oils which showed different composition patterns. The unusual compound (−)-5,6-dehydrocamphor, the major c ...
DOI:
10.1016/j.phytol.2011.12.008

31. +Enhanced storm-induced turbiditic events during early Paleogene hyperthermals (Arabian continental margin, SW Iran)

Author:
Jingxin Jiang; Xiumian Hu; Eduardo Garzanti; Juan Li; Marcelle Kamal BouDagher-Fadel; Gaoyuan Sun; Yiwei Xu
Source:
Global and planetary change 2022 pp. 103832
ISSN:
0921-8181
Subject:
Anthropocene epoch; Eocene epoch; Thanetian age; carbon; carbonates; climate; latitude; stable isotopes; Iran
Abstract:
... Early Paleogene hyperthermal episodes including the Paleocene-Eocene Thermal Maximum (PETM) have long been viewed as analogues of the Anthropocene global warming. Few studies, however, have analyzed the environmental consequences of such climatic anomalies in deep-water turbidite-rich successions. This integrated sedimentological, biostratigraphic, and stable-isotope study of the Paleogene Pabdeh ...
DOI:
10.1016/j.gloplacha.2022.103832

32. 0.2 V Electrolysis Voltage-Driven Alkaline Hydrogen Production with Nitrogen-Doped Carbon Nanobowl-Supported Ultrafine Rh Nanoparticles of 1.4 nm

Author:
Nan Jia; Yanping Liu; Lei Wang; Pei Chen; Xinbing Chen; Zhongwei An; Yu Chen
Source:
ACS applied materials & interfaces 2019 v.11 no.38 pp. 35039-35049
ISSN:
1944-8252
Subject:
Gibbs free energy; adsorption; carbon; catalysts; chemical bonding; density functional theory; electrolysis; energy conservation; hydrazine; hydrogen; hydrogen production; nanoparticles; oxidation; potassium hydroxide; rhodium
Abstract:
... The development of highly effective and low-cost electrocatalysts for energy-saving hydrogen production via water splitting is still a great challenge. Herein, porous nitrogen-doped carbon nanobowls (N-CBs) have been designed and used for the controlled growth of ultrafine rhodium (Rh) nanoparticles. With the aid of interfacial bonding of Rh and N, ultrafine Rh nanoparticles with an average size o ...
DOI:
10.1021/acsami.9b13586

33. 065 Designing potent inhibitors of Ice recrystallization - from C-linked antifreeze glycoproteins (AFGPs) to small molecules

Author:
Robert Ben
Source:
Cryobiology 2013 v.67 no.3 pp. 416
ISSN:
0011-2240
Subject:
amino acids; antifreeze proteins; carbon; cell lines; cell viability; cryopreservation; cryoprotectants; crystallization; crystals; death; dimethyl sulfoxide; encapsulation; fish; glycerol; glycoconjugates; glycosides; health services; hysteresis; ice; mechanical damage; models; peptides; sowing; stem cells; surfactants; therapeutics; viruses
Abstract:
... Cell-based therapeutics has emerged as a critical aspect of modern health care and has shaped new models of care in stem cell and regenerative therapy. Dimethyl sulfoxide and glycerol are the two most common cryoprotectants. Unfortunately, many of the current cryopreservation protocols are suboptimal resulting in poor cell recoveries and/or compromised cellular function post cryopreservation thus ...
DOI:
10.1016/j.cryobiol.2013.09.071

34. 093 Ultra rapid warming of cryo samples using an IR laser pulse

Author:
F.W. Kleinhans; Bo Jin; Estefania Paredes; Peter Mazur
Source:
Cryobiology 2013 v.67 no.3 pp. 424
ISSN:
0011-2240
Subject:
absorption; air; ambient temperature; buffers; carbon; cooling; energy; fires; lasers; melting; mice; models; oocytes; optical traps; surface area; temperature profiles; wavelengths; welding
Abstract:
... Our laboratory has been investigating the effect of warming rate on survival of mouse oocytes after very rapid cooling. Cooling and warming rates are affected by sample thermal mass, surface area, thermal impedance, and delta T. To maximize these rates we use 0.1 ul samples placed on Cryotops and plunged directly into LN2 for cooling and into room temperature buffer for warming. The maximum warmin ...
DOI:
10.1016/j.cryobiol.2013.09.099

35. 0D/1D/2D architectural Co@C/MXene composite for boosting microwave attenuation performance in 2–18 GHz

Author:
Zhe Zou; Mingqiang Ning; Zhenkuang Lei; Xueheng Zhuang; Guoguo Tan; Jianhua Hou; Hui Xu; Qikui Man; Jingbo Li; Run-Wei Li
Source:
Carbon 2022 v.193 pp. 182-194
ISSN:
0008-6223
Subject:
absorption; angle of incidence; carbon; carbon nanotubes; electrical conductivity; magnetism; nanosheets; radar; surface area
Abstract:
... Ti₃C₂Tₓ is considered a candidate for high-efficiency microwave absorption materials due to its adjustable electrical conductivity, low density and high specific surface area in recent years. However, the single absorption mechanism could not meet the practical requirements as the functional microwave absorbers. Herein, 0D/1D/2D architectures of Co@C/MXene with 0D Co nanoparticles, 1D carbon nanot ...
DOI:
10.1016/j.carbon.2022.03.017

36. 0–20 μm aggregate typology based on the nature of aggregative organic materials in a cultivated silty topsoil

Author:
F. Watteau; G. Villemin; F. Bartoli; C. Schwartz; J.L. Morel
Source:
Soil biology & biochemistry 2012 v.46 no. pp. 103-114
ISSN:
0038-0717
Subject:
carbon; corn; land use; microscopy; organic matter; pH; sewage sludge; silt; soil micromorphology; soil sampling; soil structure; tillage; topsoil; France
Abstract:
... Soil structure is a key characteristic of soil functioning. More, silt and clay-sized organo-mineral fractions are usually considered as the most reactive soil fractions. As transmission electronic microscopy (TEM) appeared to be well-suited to study soil microstructures, it was used to test the sensitivity of micro-aggregates to land use and cultivation practices. The aims of this study were ther ...
DOI:
10.1016/j.soilbio.2011.11.021

37. 1,1,1,1 -Tetrakis[triorganylphosphineaurio(I)]ethanium(+) Tetrafluoroborates - Hypercoordinated Species Containing [H3C—C(AuL)4]+ Cations

Author:
Oliver Steigeimann; Peter Bissinger; Hubert Schmidbaur
Source:
Zeitschrift für Naturforschung 2014 v.48 no.1 pp. 72-78
ISSN:
0932-0776
Subject:
X-radiation; carbon; cations; chlorides; ethane; gold; moieties; spectroscopy
Abstract:
... Hypercoordinate, tetraaurated carbon-complexes of the type [H₃C--C (AuPR₃)₄]⁺BF₄⁻, R = Ph (1), R = C₆H₁₁ (2), (PR₃)₂ = 1,2-C₆H₄(CH₂CH₂PPh₂)₂ (3) have been prepared by the reaction of the appropriate (phosphane)gold(I) chlorides with 1,1,1-tris(dimethoxyboryl)ethane H₃C -C [B(OMe)₂]₃ in the presence of CsF. The products have been characterized by standard analytical and spectroscopic methods, inclu ...
DOI:
10.1515/znb-1993-0116

38. 1,1- and 1,2-Allylboration of Alkyn-1-ylsilanes Bearing Si-H Functions. Electron-Deficient Si-H-B Bridges, and Intramolecular Hydrosilylation

Author:
Bernd Wrackmeyer; Oleg L. Tok
Source:
Zeitschrift für Naturforschung 2014 v.61 no.3 pp. 243-251
ISSN:
0932-0776
Subject:
alkenes; carbon; chemical bonding; hydrides; moieties; nuclear magnetic resonance spectroscopy; silicon; stable isotopes; stereoselectivity
Abstract:
... The reactions of n-hexyn-1-ylsilanes or arylethyn-1-ylsilanes, bearing methyl groups and one (2), two (3) or three hydride functions (4) at the silicon atom, with triallylborane 1 lead primarily to products of 1,1- or 1,2-allylboration. In the alkenes (5, 9, 13) formed by stereoselective 1,1-allylboration, with the silyl and the diallylboryl groups in cis-positions at the C=C bond an electron-defi ...
DOI:
10.1515/znb-2006-0303

39. 1,1-Carboboration Reactions of Strongly Electrophilic 2-Borylethyl Thioethers

Author:
Christina Eller; Bastian Billmann; Constantin G. Daniliuc; Gerald Kehr; Gerhard Erker
Source:
Zeitschrift für Naturforschung 2015 v.69 no.11-12 pp. 1357-1364
ISSN:
0932-0776
Subject:
Lewis acids; X-ray diffraction; acetylene; boranes; carbon
Abstract:
... The RSCH₂CH₂B(C₆F₅)₂ boranes 3a (R=Ph) and 3b (R=Et) were in situ generated by HB(C₆F₅)₂ hydroboration of the respective vinylthioethers. Their treatment with R¹-C≡C- SiMe₃ acetylenes resulted in clean 1,1-carboboration to give the respective RSCH₂CH₂-substituted alkenylboranes 4 (3 examples). Likewise, the reagents 3 underwent 1,1-carboboration with the acetylenes Ar₂P-C≡C-SiMe₃ to give the tetra ...
DOI:
10.5560/znb.2014-4190

40. 1,1-Digoldallylium Complexes: Diaurated Allylic Carbocations Indicate New Prospects of the Coordination Chemistry of Carbon

Author:
Florian F. Mulks; Patrick W. Antoni; Jürgen H. Gross; Jürgen Graf; Frank Rominger; A. Stephen K. Hashmi
Source:
Journal of the American Chemical Society 2019 v.141 no.11 pp. 4687-4695
ISSN:
1520-5126
Subject:
Lewis bases; carbon; coordination compounds; dimethyl sulfoxide; gold; nuclear magnetic resonance spectroscopy; tandem mass spectrometry
Abstract:
... Reacting (NHC)(cyclopropenyl)gold(I) complexes with cationic gold complexes [(IPr)AuX] afforded extremely reactive allylium-1,1-diido-bridged digold intermediates. We prove the existence and constitution of this structure with FT-ICR-MS/MS, NMR, and UV–vis–NIR experiments and isolated the nucleophilic addition product [(Me)(Ph)(CCHC){Au(IPr)}₂(SOMe₂)]NTf₂ with DMSO. Our computational investigation ...
DOI:
10.1021/jacs.8b13395

41. 1,1-Disilylethan, CH3CH(SiH3)2 / 1,1-Disilylethane, CH3CH(SiH3)2

Author:
Hubert Schmidbaur; Rudolf Hager
Source:
Zeitschrift für Naturforschung 2014 v.43 no.5 pp. 571-573
ISSN:
0932-0776
Subject:
air; alloys; aluminum; carbon; ethane; hydrides; isomers; liquids; lithium; organochlorine compounds; silicon; silicon carbide; vapors
Abstract:
... 1,1-Bis(trichlorosilyl)ethane, CH₃CH(SiCl₃)₂ (1) is readily available through catalytic hydrosilylation of vinyltrichlorosilane and silicochloroform (90% yield), or through the base-induced reduction of acetyl chloride using again silicochloroform (60%). 1 can be converted into the title compound 2 in 80% yield by lithium aluminium hydride in di-n-butylether. Compound 2 is a highly volatile liquid ...
DOI:
10.1515/znb-1988-0514

42. 1,1-Ethylboration Of Di(alkyn-1-yl)Silanes With Two And Three Si-H Functions. New Silacyclopentadienes

Author:
Bernd Wrackmeyer; Oleg L. Tok; Azim Khan; Amin Badshah
Source:
Zeitschrift für Naturforschung 2014 v.60 no.3 pp. 251-258
ISSN:
0932-0776
Subject:
carbon; nuclear magnetic resonance spectroscopy; silanes; silicon; stable isotopes
Abstract:
... The reaction of the di(alkyn-1-yl)silanes Me₂Si(C≡CSiMe₂H)₂ 1a and Me(H)Si(C≡CSiMe₂H)₂ 1b with triethylborane was studied. In the case of 1a, the 4-ethyl-3-diethylboryl-1,1-dimethyl-2,5- bis(dimethylsilyl)-1-sila-2,4-cyclop entadiene 2a was the sole product. In the case of 1b, the analogous silole 2b was formed along with two other products which were identified as di(alkenyl)silanes 3b and 4b, in ...
DOI:
10.1515/znb-2005-0303

43. 1,1-Ethylborationof Diethynyl(dimethyl)silane: Formation of a Silole Followed by [4+2]Cycloadditions to 7-Silanorbornadienes and 7-Silanorbornenes

Author:
Bernd Wrackmeyer; Jürgen Süß
Source:
Zeitschrift für Naturforschung 2014 v.57 no.7 pp. 741-745
ISSN:
0932-0776
Subject:
carbon; cycloaddition reactions; nuclear magnetic resonance spectroscopy; silane; stable isotopes
Abstract:
... Diethynyl(dimethyl)silane, Me₂Si(C≡C-H)₂ 2, reacts with triethylborane, Et₃B 1, by 1,1- ethylboration to give a silole, 3-diethylboryl-4-ethyl-1,1-dimethyl-sila-2,4-cyclopentadiene 3, as a short-lived intermediate which reacts further with 2 or dimerises via [4+2]cycloadditions to the 7-silanorbornadiene 4 or the 7-silanorbornene derivatives 5, respectively. Since the silole 3 was not detected by ...
DOI:
10.1515/znb-2002-0705

44. 1,1-Organoboration of Sterically Hindered Tetra-l-alkynylsilanes and the Crystal Structure of Tetrakis[1-(3,3-dimethyl)butynyl]silane

Author:
Bernd Wrackmeyer; Heidi E. Maisei; Jürgen Süß; Wolfgang Milius
Source:
Zeitschrift für Naturforschung B 2014 v.51 no.9 pp. 1320-1324
ISSN:
1865-7117
Subject:
boiling; carbon; crystal structure; silane; silicon; tin; toluene
Abstract:
... Tetra-1-alkynylsilanes, Si(C≡CR¹)₄ with R¹ = ᵗBu (1) and SiMe₃ (2) react with triethylborane, Et₃B. by intermolecular 1,1-ethyloboration followed by intramolecular 1,1-vinyloboration, to give the substituted siloles 3 and 5 with two R¹C≡C groups linked to silicon. The formation of 5 (R¹ = SiMe₃) requires exactly one equivalent of Et₃B, whereas 3 (R₁ = ᵗBu) is formed after ≈ 20 d in boiling toluene ...
DOI:
10.1515/znb-1996-0917

45. 1,1-Organoboration of Trimethyl-l-propynyltin Using Diorganoboryl-Substituted Ferrocenes

Author:
Bernd Wrackmeyer; Udo Dörfler; Wolfgang Milius; Max Herberhold
Source:
Zeitschrift für Naturforschung 1996 v.51 no.6 pp. 851-858
ISSN:
1865-7117
Subject:
X-radiation; boron; carbon; moieties; nuclear magnetic resonance spectroscopy; stable isotopes
Abstract:
... The reactions of various diorganoborylferrocenes, Fc -BR₂ [1, R = Me (a), Et (b), ⁱPr (c), ᵗBu (d), Ph (f), R₂B = 9-borabicyclo[3.3.1]nonyl (e)] and 1,1′-bis(9-borabicyclo[3.3.1]nonyl)- ferrocene (2) with trimethyl-l-propynyltin (3) were studied, and the products of the 1,1- organoboration were characterized as the alkenyltin compounds 4 -6 by ¹H, ¹¹B, ¹³C and ¹¹⁹Sn NMR. In the cases of 1a - 1d an ...
DOI:
10.1515/znb-1996-0615

46. 1,2 Propanediol utilization by Lactobacillus reuteri DSM 20016, role in bioconversion of glycerol to 1,3 propanediol, 3-hydroxypropionaldehyde and 3-hydroxypropionic acid

Author:
Heba M. Amin; Abdelgawad M. Hashem; Mohamed S. Ashour; Rajini Hatti-Kaul
Source:
Journal of Genetic Engineering and Biotechnology 2013 v.11 pp. 53-59
ISSN:
1687-157X
Subject:
1-propanol; Lactobacillus reuteri; bacteria; biochemical pathways; biotransformation; carbon; energy; ethanol; fermentation; gas chromatography; glucose; glycerol; high performance liquid chromatography; lactic acid; metabolites; propionic acid; specific growth rate; succinic acid
Abstract:
... The objective of the presented work is to demonstrate the metabolism of 1,2 propandiol by Lactobacillus reuteri and to elucidate the metabolites produced during the process. This Metabolic pathway is crucial for biotechnological applications using L. reuteri in bioconversion of glycerol to industrially important plate-form chemicals. L. reuteri grown on minimal media containing 1,2 propanediol was ...
DOI:
10.1016/j.jgeb.2012.12.002

47. 1,2,3-Triazole-Mediated Synthesis of 1-Methyleneisoquinolines: A Three-Step Synthesis of Papaverine and Analogues

Author:
Tomas Opsomer; Max Van Hoof; Andrea D’Angelo; Wim Dehaen
Source:
Organic letters 2020 v.22 no.9 pp. 3596-3600
ISSN:
1523-7052
Subject:
Lewis bases; acids; carbon; chemical reactions; chemical structure; isoquinolines; papaverine; triazoles
Abstract:
... A metal-free three-step synthesis toward functionalized 1-methyleneisoquinolines from readily available substrates is reported. First, acetal-containing 1,2,3-triazoles were prepared via a high-yielding triazolization reaction and quantitatively converted into triazolo[5,1-a]isoquinolines. Next, the acid-promoted ring opening of these fused triazoles was studied in order to obtain coupling to a di ...
DOI:
10.1021/acs.orglett.0c01069

48. 1,2-Aminohalogenation of arynes with amines and organohalides

Author:
Sheng-Jun Li; Lu Han; Shi-Kai Tian
Source:
Chemical communications 2019 v.55 no.75 pp. 11255-11258
ISSN:
1364-548X
Subject:
Lewis acids; amines; carbon; carbon tetrachloride; chemical reactions; halogens; zwitterions
Abstract:
... An unprecedented use of inexpensive organohalides as halogen electrophiles to trap the zwitterion intermediates generated from amines and arynes has been developed to access structurally diverse tertiary 2-haloanilines. Effective organohalides include carbon tetrachloride, hexachloroethane, N-chlorosuccinimide, carbon tetrabromide, fluorotribromomethane, N-bromosuccinimide, carbon tetraiodide, and ...
DOI:
10.1039/c9cc05505c

49. 1,2-Hydroboration and 1,1-Carboboration of Alkynyl(ferrocenyl)vinylsilanes. Novel Siloles

Author:
Bernd Wrackmeyer; Elena V. Klimkina; Wolfgang Milius; Christian Butterhof; Kathrin Inzenhofer
Source:
Zeitschrift für Naturforschung 2015 v.69 no.11-12 pp. 1269-1289
ISSN:
0932-0776
Subject:
boron; carbon; moieties; nuclear magnetic resonance spectroscopy; regioselectivity; stable isotopes
Abstract:
... Alkynyl(ferrocenyl)vinylsilanes containing up to three alkynyl units were prepared and treated with 9-borabicyclo[3.3.1]nonane (9-BBN). All reactions proceeded in the beginning by regioselective 1,2-hydroboration of the vinyl group, with boron attached to the terminal carbon. This was followed by intra-molecular 1,1-carboboration, leading to fused silacarbacycles, depending on the number of C≡C bo ...
DOI:
10.5560/znb.2014-4099

50. 1,2-Hydroboration of Alkyn-1-yldichlorosilanes using Triethylborane

Author:
Bernd Wrackmeyer; Ezzat Khan; Wolfgang Milius
Source:
Zeitschrift für Naturforschung 2014 v.63 no.11 pp. 1267-1275
ISSN:
0932-0776
Subject:
carbon; hydrogen; moieties; nuclear magnetic resonance spectroscopy; silane; stable isotopes
Abstract:
... Triethylborane, BEt₃, can act as a 1,2-hydroborating reagent towards alkyn-1-ylsilanes, depending on the nature of the silane. A mechanism is proposed invoking hydrogen transfer from the β -carbon of one ethyl group, quite different from the 1,2-hydroboration mechanism using tri-n-propylborane, BⁿPr₃. The structure of the products has been confirmed by comparison with that obtained using 9-borabic ...
DOI:
10.1515/znb-2008-1105

51. 1,2-Propanediol production from glycerol via an endogenous pathway of Klebsiella pneumoniae

Author:
Shaoqi Sun; Lin Shu; Xiyang Lu; Qinghui Wang; Marina Tišma; Chenguang Zhu; Jiping Shi; Frank Baganz; Gary J. Lye; Jian Hao
Source:
Applied microbiology and biotechnology 2021 v.105 no.23 pp. 9003-9016
ISSN:
0175-7598
Subject:
Klebsiella pneumoniae; agitation; bacteria; batch fermentation; biotechnology; carbon; catabolism; glycerol; glycolysis; oxidoreductases; pH; phosphates; phosphotransferases (kinases); triose-phosphate isomerase
Abstract:
... Klebsiella pneumoniae is an important microorganism and is used as a cell factory for many chemicals production. When glycerol was used as the carbon source, 1,3-propanediol was the main catabolite of this bacterium. K. pneumoniae ΔtpiA lost the activity of triosephosphate isomerase and prevented glycerol catabolism through the glycolysis pathway. But this strain still utilized glycerol, and 1,2-p ...
DOI:
10.1007/s00253-021-11652-w

52. 1,3-Diaza[3]ferrocenophanes functionalized with a nitronyl nitroxide group

Author:
Larisa Gurskaya; Irina Bagryanskaya; Evgeny Amosov; Maxim Kazantsev; Larisa Politanskaya; Elena Zaytseva; Elena Bagryanskaya; Aleksander Chernonosov; Evgeny Tretyakov
Source:
Tetrahedron 2018 v.74 no.15 pp. 1942-1950
ISSN:
0040-4020
Subject:
Lewis bases; X-radiation; X-ray diffraction; carbon; crystal structure; gold; hydrolysis; iron; moieties; nitrogen; organic compounds; oxidation
Abstract:
... An aza-Wittig reaction of 1,1′-bis(triphenylphosphoranylidenamino)-ferrocene with 4-iodo-, 2,5-difluoro-4-iodo-, pentafluoro-, or 4-methoxycarbonylphenylisocyanates is described here. Intermediate betaines, which are products of a nucleophilic attack of the nitrogen atom of the remaining iminophosphorane moiety on the carbon atom of the carbodiimide functional group, were isolated; their structure ...
DOI:
10.1016/j.tet.2018.02.062

53. 1,3-Digermapropan und 1,3,5-Trigermacyclohexan / 1,3-Digermapropane and 1,3,5-Trigermacyclohexane

Author:
Hubert Schmidbaur; Johann Rott; Gabriele Reber; Gerhard Müller
Source:
Zeitschrift für Naturforschung 2014 v.43 no.6 pp. 727-732
ISSN:
0932-0776
Subject:
alloys; carbon; crystal structure; germanium; hydrides; methylene chloride; spectral analysis; vapors
Abstract:
... From the copper-catalyzed reaction of germanium powder with dichloromethane at 350 °C a mixture of alkylchlorogermanes is obtained, in which CH₃GeCl₃, CH₂(GeCl₃)2 (1) and (Cl₂GeCH₂)₃ (2) are the major products. Treatment of 1 and 2 with LiAlH₄ in di-n-butyl or diethylether, resp., affords the hydrides CH₂(GeH₃)₂ (3) and cyclic (H₂GeCH₂)₃ (4), the latter along with the heterocycle H₂Ge(CH₂GeH₂)₂ (5 ...
DOI:
10.1515/znb-1988-0615

54. 1,3-Dipolar cycloaddition of azinium ylides to alkynyl hetarenes: a synthetic route to indolizine and pyrrolo[2,1-a]isoquinoline based heterobiaryls

Author:
Julia I. Nelina-Nemtseva; Anna V. Gulevskaya; Alexander F. Pozharskii; Huong T.L. Nguyen; Ekaterina A. Filatova
Source:
Tetrahedron 2016 v.72 pp. 2327-2335
ISSN:
0040-4020
Subject:
carbon; chemical structure; cycloaddition reactions; pyridines; uracil
Abstract:
... For the first time, π-deficient alkynyl hetarenes were used as dipolarophiles in a 1,3-dipolar cycloaddition reaction with in situ generated azinium ylides. A three-component reaction of pyridine or isoquinoline, ethyl chloroacetate and alkynyl hetarene (pyrazine, quinoxaline, uracil, or lumazine derivative) in the presence of a base gave the corresponding indolizine or pyrrolo[2,1-a]isoquinoline ...
DOI:
10.1016/j.tet.2016.03.050

55. 1,3-Distanna-2-phospha-[3]ferrocenophanes - Synthesis, Reactivity and NMR Spectroscopic Properties

Author:
Max Herberhold; Udo Steffl; Bernd Wrackmeyer
Source:
Zeitschrift für Naturforschung 2014 v.54 no.1 pp. 57-62
ISSN:
0932-0776
Subject:
carbon; chemical bonding; chromium; molybdenum; nuclear magnetic resonance spectroscopy; oxygen; phosphorus; selenium; spectral analysis; stable isotopes; sulfur; traps
Abstract:
... 1,1,3,3-Tetramethyl-2-organo(R)-1,3-distanna-2-phospha-[3]ferrocenophanes [R = Me (2a), ᵗBu (2b), C₆H₁₁ (2c), Ph (2d)] and one arsa-analogue 2d(As) were obtained from the reaction of 1,1′-bis(chlorodimethylstannyl)ferrocene 1 with either bis(trimethylsilyl)methylphosphane or the dilithio derivatives, Li₂PR and Li₂AsPh, respectively. All compounds 2 react with chalcogens (oxygen, sulfur, selenium) ...
DOI:
10.1515/znb-1999-0113

56. 1,3-Propanediol production from crude glycerol by Clostridium butyricum DSP1 in repeated batch

Author:
Daria Szymanowska-Powałowska
Source:
Electronic Journal of Biotechnology 2014 v.17 pp. 322-328
ISSN:
0717-3458
Subject:
Clostridium butyricum; biodiesel; biomass; bioreactors; byproducts; carbon; culture media; fermentation; glycerol; inoculum; polyesters; rapeseed oil; raw materials
Abstract:
... The production of biofuels from renewable energy sources is one of the most important issues in industrial biotechnology today. The process is known to generate various by-products, for example crude glycerol, which is obtained in the making of biodiesel from rapeseed oil. Crude glycerol may be utilized in many ways, including microbial conversion to 1,3-propanediol (1,3-PD), a raw material for th ...
DOI:
10.1016/j.ejbt.2014.10.001

57. 1,3-Propanediol production from glycerol with a novel biocatalyst Shimwellia blattae ATCC 33430: Operational conditions and kinetics in batch cultivations

Author:
Alberto Rodriguez; Mateusz Wojtusik; Vanessa Ripoll; Victoria E. Santos; F. Garcia-Ochoa
Source:
Bioresource technology 2016 v.200 pp. 830-837
ISSN:
0960-8524
Subject:
agitation; air; biocatalysts; carbon; fermentation; glycerol; mixing; nitrogen; pH; temperature
Abstract:
... Shimwellia blattae ATCC 33430 as biocatalyst in the conversion of 1,3-propanediol from glycerol is herein evaluated. Several operational conditions in batch cultivations, employing pure and raw glycerol as sole carbon source, were studied. Temperature was studied at shaken bottle scale, while pH control strategy, together with the influence of raw glycerol and its impurities during fermentation we ...
DOI:
10.1016/j.biortech.2015.10.061

58. 1,4-Dithia-2,6-diaza-3,5-diborinane: Ein neues B–N–S-Ringsystem/ 1.4-Dithia-2.6-diaza-3,5-diborinanes: A Novel B – N –S-Ringsystem

Author:
Carl Habben; Anton Meller
Source:
Zeitschrift für Naturforschung 2014 v.39 no.8 pp. 1022-1026
ISSN:
0932-0776
Subject:
carbon; nuclear magnetic resonance spectroscopy; stable isotopes; sulfur
Abstract:
... The novel 1,4-dithia-2,6-diaza-3,5-diborinane ring system results from the reaction of 3,5- dialkyl- (or di-sec.amino-) substituted 1,2,4-trithia-3,5-diborolanes with 1.3-disubstituted sulfurdiimides by replacement of the disulfane bridge. Upon treatment with azomethines, 3,5-dibromo- 1.2.4-trithia-3,5-diborolane gives 3,5-dibromo-1,2-dithia-4-aza-5-diborolidines by substitution of the sulfur atom ...
DOI:
10.1515/znb-1984-0805

59. 1,4NQ-BC enhances the lung inflammation by mediating the secretion of IL-33 which derived from macrophages

Author:
Qianqian Xiao; Yiming Song; Hongqian Chu; Mengmeng Tang; Jianjun Jiang; Qinghe Meng; Weidong Hao; Xuetao Wei
Source:
Environmental pollution 2020 v.265 pp. 114729
ISSN:
0269-7491
Subject:
carbon; combustion; cytotoxicity; inflammation; innate immunity; interleukin-6; lungs; macrophages; naphthoquinones; particulates; pollution; secretion; vegetation
Abstract:
... Black carbon (BC) is a product of incomplete combustion of fossil fuels and vegetation. The compelling evidence has demonstrated that it has a close relationship with several respiratory and cardiovascular diseases. BC provides the reactive sites and surfaces to absorb various chemicals, such as polycyclic aromatic hydrocarbons (PAH). Naphthoquinone is a typical PAHs which was found in particulate ...
DOI:
10.1016/j.envpol.2020.114729

60. 1,5-Diaminonaphthalene functionalized carbon nanodots as a novel matrix for the analysis of small molecules by matrix-assisted laser desorption/ionization mass spectrometry

Author:
Yueying Zhang; Dan Gao; Shangfu Li; Weili Wei; Jinshun Lin; Yuyang Jiang
Source:
Analytical methods 2019 v.11 no.8 pp. 1131-1136
ISSN:
1759-9679
Subject:
amino acids; antineoplastic agents; carbon; desorption; detection limit; dopamine; fatty acids; mass spectrometry; nanotechnology; salt tolerance
Abstract:
... 1,5-Diaminonaphthalene functionalized carbon nanodots (DAN-CDs) were explored as a novel matrix for direct detection of small molecules by matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) in negative ion mode. By using DAN-CDs as the matrix, we could detect not only biological small molecules such as fatty acids (FAs), amino acids, peptide Gly–Gly and dopamine, but also ant ...
DOI:
10.1039/c8ay02665c

61. 1,5-Diaminopentane production from xylooligosaccharides using metabolically engineered Corynebacterium glutamicum displaying beta-xylosidase on the cell surface

Author:
Kenta Imao; Rie Konishi; Mayumi Kishida; Yuuki Hirata; Shota Segawa; Noriko Adachi; Rena Matsuura; Yota Tsuge; Takuya Matsumoto; Tsutomu Tanaka; Akihiko Kondo
Source:
Bioresource technology 2017 v.245 pp. 1684-1691
ISSN:
0960-8524
Subject:
Bacillus subtilis; Corynebacterium glutamicum; cadaverine; carbon; lysine; lysine decarboxylase; metabolic engineering; xylan 1,4-beta-xylosidase; xylooligosaccharides; xylose
Abstract:
... Xylooligosaccharide-assimilating Corynebacterium glutamicum strains were constructed using metabolic engineering and cell surface display techniques. First, C. glutamicum was metabolically engineered to create lysine-producing strains. Beta-xylosidase BSU17580 derived from Bacillus subtilis was then expressed on the C. glutamicum cell surface using PorH anchor protein, and enzymes involved in the ...
DOI:
10.1016/j.biortech.2017.05.135

62. 1,6-Addition of Tertiary Carbon Radicals Generated From Alcohols or Carboxylic Acids by Visible-Light Photoredox Catalysis

Author:
Samir Y. Abbas; Peng Zhao; Larry E. Overman
Source:
Organic letters 2018 v.20 no.3 pp. 868-871
ISSN:
1523-7052
Subject:
alcohols; carbon; carboxylic acids; catalytic activity; chemical structure; free radicals; photocatalysts; redox reactions
Abstract:
... The addition of tertiary carbon radicals generated by an Ir-catalyzed visible-light photocatalyst to electron-deficient 1,3-dienes proceeds in good yields to append a δ-substituted β,γ-unsaturated carbonyl fragment to a tertiary alcohol or carboxylic acid precursor and construct a new quaternary carbon center. ...
DOI:
10.1021/acs.orglett.7b04034

63. 1,6-Conjugate addition of C-nucleophiles to p-quinone methide surrogate: Synthesis of diarylpropanes

Author:
Kukkamudi Sreenivas; Faiz Ahmed Khan
Source:
Tetrahedron 2019 v.75 no.5 pp. 633-642
ISSN:
0040-4020
Subject:
Lewis bases; carbon; dimerization; moieties; nitroalkanes; phenol; quinones
Abstract:
... 1,6-Conjugate addition of various carbon nucleophiles to p-quinone methide surrogate is reported. The active methylene containing C-nucleophiles such as 1,3-diketones, diesters and ketoesters underwent two consecutive additions leading to bis-addition products, diarylpropanes. Whereas, nitroalkanes proceeded to contribute mono-addition products. Surprisingly, bromo analogue of p-quinone methide su ...
DOI:
10.1016/j.tet.2018.12.048

64. 1-(Phenylsulfonyl)-3-oxabicyclo[3.1.0]hexan-2-one as a Building Block in Organic Synthesis

Author:
Daniela Konrádová; David Jean-Yves Denis Bon; Jiří Pospíšil
Source:
Journal of organic chemistry 2018 v.83 no.19 pp. 12229-12238
ISSN:
1520-6904
Subject:
carbon; chemical reactions; chemical structure; organic chemistry; organic compounds; stereoselectivity
Abstract:
... The transformation of the readily available phenylsulfonyl lactone building block to structurally diverse molecular scaffolds is described. Depicted structures are accessed in one to three steps, and their overall yields are high. The rigidity of the starting building block greatly directs the stereoselectivity of the transformations, and newly generated stereogenic centers including the quaternar ...
DOI:
10.1021/acs.joc.8b01625

65. 1-Aza-2,4-disilabicyclo[1.1.0]butanes with Superelongated C–N σ-Bonds

Author:
Jiancheng Li; Daniel J. Goffitzer; Meiyu Xiang; Yilin Chen; Wenjun Jiang; Martin Diefenbach; Hongping Zhu; Max C. Holthausen; Herbert W. Roesky
Source:
Journal of the American Chemical Society 2021 v.143 no.22 pp. 8244-8248
ISSN:
1520-5126
Subject:
Americans; butanes; carbon; journals; length; nitriles
Abstract:
... Two silylene molecules oxidatively react under formal [1 + 2 + 1]-cycloaddition to the C≡N bond of nitriles to yield 1-aza-2,4-disilabicyclo[1.1.0]butanes (L)(Cl)Si[μ-η¹,²-NC(p-RC₆H₄)]Si(Cl)(L) (L = PhC(NtBu)₂, R = CF₃ (2), F (3), Cl (4), Br (5)). The strongly folded bicyclic SiCNSi cores in 2–5 feature inverted bridgehead carbon atoms and superelongated C–N bonds [1.745(12) to 1.801(2) Å], exceed ...
DOI:
10.1021/jacs.1c03149

66. 1-Butylimidazole-derived ionic liquids: synthesis, characterisation and evaluation of their antibacterial, antifungal and anticancer activities

Author:
Prabodh Ranjan; Bheru Singh Kitawat; Man Singh
Source:
RSC advances 2014 v.4 no.96 pp. 53634-53644
ISSN:
2046-2069
Subject:
Bacillus subtilis; Escherichia coli; Fourier transform infrared spectroscopy; Pseudomonas aeruginosa; Staphylococcus aureus; antifungal properties; antineoplastic activity; carbon; cell growth; cell lines; doxorubicin; ionic liquids; nuclear magnetic resonance spectroscopy; organic halogen compounds; stable isotopes
Abstract:
... A series of new 1-butylimidazole-based ionic liquids (3a–h) have been synthesised by the quaternisation reaction of 1-butylimidazole with different alkyl- and alkoxy-substituted aryl halides using a microwave solvent-free approach with ≈82–95% yield. The solvent-free approach allows the preparation of a variety of ILs with better yields and purities, making any further purification unnecessary. Th ...
DOI:
10.1039/c4ra08370a

67. 1-Chloro- and 1-Hydroxyphospholene-1-sulfides

Author:
Kurt Moedritzer
Source:
Zeitschrift für Naturforschung B 2014 v.31 no.6 pp. 709-713
ISSN:
1865-7117
Subject:
carbon; distillation; isomers; mass spectrometry; nuclear magnetic resonance spectroscopy; phosphorus; stable isotopes
Abstract:
... A mixture of the two isomers of 1-chlorophospholene-1-oxide, obtained by a one-step, high-yield procedure reported previously¹, upon reaction with P₄S₁₀ was converted to a mixture of the two isomers of 1-chlorophospholene-1-sulfide which may be separated by spinning-band distillation. The thus obtained isomerically pure 1-chlorophospholene-1-sulfides were hydrolyzed to the corresponding 1-hydroxyp ...
DOI:
10.1515/znb-1976-0602

68. 1-Chloro-n-alkanes: Potential mangrove and saltmarsh vegetation biomarkers

Author:
Svenja Tulipani; Lorenz Schwark; Alex I. Holman; Richard T. Bush; Kliti Grice
Source:
Organic geochemistry 2017 pp. -
ISSN:
0146-6380
Subject:
Lumnitzera racemosa; Sporobolus virginicus; biochemical pathways; biomarkers; carbon; chlorinated hydrocarbons; grasses; halophytes; salt marshes; stable isotopes; vegetation
Abstract:
... Chlorinated hydrocarbons with biological sources occur in high abundance and diversity in living organisms as well as in sedimentary environments. Although some of these compounds are potentially highly source-specific and sufficiently degradation-resistant, their capacity as sedimentary biomarkers remains under-investigated. Distinct series of long-chain 1-chloro-n-alkanes have previously been re ...
DOI:
10.1016/j.orggeochem.2017.02.007

69. 1-D copper(I) coordination polymer based on bidentate 1,3-dithioether ligand: Novel catalyst for azide-alkyne-cycloaddition (AAC) reaction

Author:
Sankar Saha; Kinkar Biswas; Basudeb Basu
Source:
Tetrahedron letters 2018 v.59 no.26 pp. 2541-2545
ISSN:
0040-4039
Subject:
X-ray diffraction; carbon; catalysts; catalytic activity; chemical structure; coordination polymers; copper; cycloaddition reactions; ligands; nuclear magnetic resonance spectroscopy; regioselectivity; stable isotopes; sulfur; triazoles
Abstract:
... A novel 1,3-bis(4-fluorophenylthio)-propane ligand based CuI 1-D polymeric coordination complex having formula ([(CuI)₂{ArS(CH₂)₃SAr}₂]ₙ, Ar = 4-F-C₆H₄) has been synthesized and characterized by ¹H NMR, ¹³C NMR and single crystal XRD techniques. This complex has been employed for the first time as suitable catalyst for base-free one-pot three-component regioselective azide-alkyne cycloaddition (AA ...
DOI:
10.1016/j.tetlet.2018.05.040

70. 1-D oriented cross-linking hierarchical porous carbon fibers as a sulfur immobilizer for high performance lithium–sulfur batteries

Author:
Xiaofei Yang; Ying Yu; Na Yan; Hongzhang Zhang; Xianfeng Li; Huamin Zhang
Source:
Journal of materials chemistry A 2016 v.4 no.16 pp. 5965-5972
ISSN:
2050-7496
Subject:
batteries; carbon; carbon fibers; cathodes; crosslinking; lithium; sulfur
Abstract:
... One-dimensional (1D) oriented cross-linking hierarchical porous carbon fibers (CHPCF) were designed and proposed as the sulfur immobilizer for application in lithium–sulfur (Li–S) batteries. The CHPCFs exhibit a large length/diameter (L/D) ratio, a cross-linked structure and a reasonable hierarchical porous distribution, which provides “green channels” for both e⁻ and Li⁺ transport. Besides, the C ...
DOI:
10.1039/c6ta01060a

71. 1-Ethyl-3-methylimidazolium bis{(trifluoromethyl)sulfonyl}amide as solvent for the separation of aromatic and aliphatic hydrocarbons by liquid extraction – extension to C₇- and C₈-fractions

Author:
Alberto Arce; Martyn J. Earle; Héctor Rodríguez; Kenneth R. Seddon; Ana Soto
Source:
Green chemistry 2008 v.10 no.12 pp. 1294-1300
ISSN:
1463-9270
Subject:
benzene; carbon; equations; ethylbenzene; green chemistry; heptane; hexane; ionic liquids; liquids; octane; solutes; toluene
Abstract:
... The ionic liquid 1-ethyl-3-methylimidazolium bis{(trifluoromethyl)sulfonyl}amide ([C₂mim][NTf₂]) was tested as solvent for the separation of aromatic and aliphatic hydrocarbons containing 7 or 8 carbon atoms (the C₇- and C₈-fractions). The liquid–liquid equilibria (LLE) of the ternary systems (heptane + toluene + [C₂mim][NTf₂]) and (octane + ethylbenzene + [C₂mim][NTf₂]), at 25 °C, were experiment ...
DOI:
10.1039/b807222a

72. 1-Hexene: a renewable C6 platform for full-performance jet and diesel fuels

Author:
Benjamin G. Harvey; Heather A. Meylemans
Source:
Green chemistry 2014 v.16 no.2 pp. 770-776
ISSN:
1463-9270
Subject:
ambient temperature; bioethanol; biolubricants; carbon; catalysts; diesel fuel; ethanol; ethylene; freezing point; green chemistry; oligomerization; viscosity
Abstract:
... A highly efficient and selective process has been developed for the conversion of 1-hexene to jet and diesel fuels. In combination with commercial processes for the dehydration of ethanol and trimerization of ethylene, this work provides a basis for the synthesis of full-performance hydrocarbon fuels from bio-ethanol. Selective oligomerization of 1-hexene with a Cp₂ZrCl₂/MAO catalyst at ambient te ...
DOI:
10.1039/c3gc41554f

73. 1-Methylcyclopropene (1-MCP)-induced protein expression associated with changes in Tsai Tai (Brassica chinensis) leaves during low temperature storage

Author:
Yuqi Wang; Lijuan Zhang; Shijiang Zhu
Source:
Postharvest biology and technology 2014 v.87 pp. 120-125
ISSN:
0925-5214
Subject:
ethylene; Brassica rapa subsp. chinensis; reactive oxygen species; carbon; etiolation; malate dehydrogenase; mass spectrometry; ribulose 1,5-diphosphate; glutathione transferase; storage temperature; green leafy vegetables; tricarboxylic acid cycle; molecular weight; leaves; gibberellins; weight loss; ribulose-bisphosphate carboxylase; 1-methylcyclopropene; proteins; protein synthesis; biosynthesis; photosystem II; electrophoresis
Abstract:
... Leaf yellowing is an early symptom of senescence and greatly affects the commercial value of leafy vegetable products. The ethylene action inhibitor 1-methylcyclopropene (1-MCP) has been widely studied regarding its effects on senescence, but little is known on how it influences the protein expression profile of leafy vegetables in storage. In this study, by using a proteomic approach, changes in ...
DOI:
10.1016/j.postharvbio.2013.08.016

74. 1-Methylthio-1-phenyl-1-silacyclohexane: Synthesis, conformational preferences in gas and solution by GED, NMR and theoretical calculations

Author:
Bagrat A. Shainyan; Elena N. Suslova; Tran Dinh Phien; Sergey A. Shlykov; Matthias Heydenreich; Erich Kleinpeter
Source:
Tetrahedron 2019 pp. -
ISSN:
0040-4020
Subject:
carbon; chemical reactions; chemical structure; gases; nuclear magnetic resonance spectroscopy; organic compounds; quantum mechanics; silicon; stable isotopes; sulfur; temperature
Abstract:
... 1-Methylthio-1-phenyl-1-silacyclohexane 1, the first silacyclohexane with the sulfur atom at silicon, was synthesized and its molecular structure and conformational preferences studied by gas-phase electron diffraction (GED) and low temperature 13C and 29Si NMR spectroscopy (LT NMR). Quantum-chemical calculations were carried out both for the isolated species and solvate complexes in gas and in po ...
DOI:
10.1016/j.tet.2019.130677

75. 1-Phenylisoquinoline larvicidal activity against Culex quinquefasciatus

Author:
Rodolfo Quevedo; Edwin Baquero; Martha L. Quiñones
Source:
Natural product research 2012 v.26 no.12 pp. 1094-1100
ISSN:
1478-6427
Subject:
Culex quinquefasciatus; carbon; dopamine; insecticides; insects; instars; isoquinolines; larvae
Abstract:
... The larvicidal potential of several dopamine 1-phenylisoquinoline derivatives against Culex quinquefasciatus third instar larvae was investigated in a rational search for insecticides. The results showed that these isoquinolines presented moderate larvicidal activity, that the presence of a substituent is needed on carbon 1 for such activity to be presented and that it may be possible to develop n ...
DOI:
10.1080/14786419.2011.560846

76. 1-[3-(Diethylamino)phenyl]ethyl (DEAPE): A Photolabile Protecting Group for Hydroxyl and Carboxyl Groups

Author:
Xiong Ding; Pengfei Wang
Source:
Journal of organic chemistry 2018 v.83 no.18 pp. 10736-10742
ISSN:
1520-6904
Subject:
acetonitrile; alcohols; carbon; carboxylic acids; chemical bonding; chemical reactions; moieties; photochemistry; solar radiation; solvents
Abstract:
... Herein we demonstrate that the photolabile protecting group (PPG), the 1-[3-(diethylamino)-phenyl]ethyl (DEAPE) group, has dramatically different photochemical properties from the parent 3-(diethylamino)benzyl (DEABn) PPG. The new PPG, derived from DEABn by adding a methyl group to the benzylic carbon, has similar reactivity as DEABn in releasing alcohol in MeCN/water; however, it is more efficien ...
DOI:
10.1021/acs.joc.8b01137

77. 1.1-Dimethyl-1-methoxy-1λ5phospholan und -phosphorinan: Synthese, Struktur und dynamisches Verhalten / 1,1 -Dimethyl-1-methoxy-1λ5 phospholane and -phosphorinane: Synthesis, Structure and Dynamic Behaviour

Author:
Hubert Schmidbaur; Peter Holl
Source:
Zeitschrift für Naturforschung B 2014 v.33 no.5 pp. 489-492
ISSN:
1865-7117
Subject:
ambient temperature; carbon; ligands; methanol; nuclear magnetic resonance spectroscopy; phosphorus; stable isotopes
Abstract:
... The title compounds have been prepared in high yields from equimolar amounts of methanol and the ylides 1-methyl-1-methylene-phospholane and -phosphorinane, respectively. On the basis of a variable temperature ¹H, ¹³C, and ³¹P NMR study the compounds have been assigned a molecular structure with a pentacovalent phosphorus atom in a trigonal bipyramidal configuration and the methoxy group in an axi ...
DOI:
10.1515/znb-1978-0506

78. 1.5-Dimensional volatility basis set approach for modeling organic aerosol in CAMx and CMAQ

Author:
Bonyoung Koo; Eladio Knipping; Greg Yarwood
Source:
Atmospheric environment 2014 v.95 pp. 158-164
ISSN:
1352-2310
Subject:
aerosols; algorithms; anthropogenic activities; atmospheric chemistry; biomass; burning; carbon; hybrids; models; oxidation; prediction; summer; winter; Eastern United States
Abstract:
... A hybrid volatility basis set (VBS) approach to modeling atmospheric organic aerosol (OA) is developed that combines the simplicity of the 1-dimensional (1-D) VBS with the ability to describe evolution of OA in the 2-dimensional space of oxidation state and volatility. This 1.5-D scheme uses four basis sets to describe varying degrees of oxidation in ambient OA: two basis sets for chemically aged ...
DOI:
10.1016/j.atmosenv.2014.06.031

79. 1/f noise and mechanisms of the conductivity in carbon nanotube bundles

Author:
B.A. Danilchenko; N.A. Tripachko; S. Lev; M.V. Petrychuk; V.A. Sydoruk; B. Sundqvist; S.A. Vitusevich
Source:
Carbon 2011 v.49 no.15 pp. 5201-5206
ISSN:
0008-6223
Subject:
carbon; carbon nanotubes; temperature
Abstract:
... Experimental results are reported of the investigation of conductivity mechanisms in metallic single-wall carbon nanotube (SWCNT) bundles in a wide temperature range from 4.2K to 300K. The temperature dependence of the resistance and noise parameters – the logarithmic slope of the current dependence of noise as well as the normalized current noise – are compared. Remarkable changes in noise charac ...
DOI:
10.1016/j.carbon.2011.07.037

80. 10-methoxydihydrofuscin, fuscinarin, and fuscin, novel antagonists of the human CCR5 receptor from Oidiodendron griseum

Author:
Yoganathan, K.; Rossant, C.; Ng, S.; Huang, Y.; Butler, M.S.; Buss, A.D.
Source:
Journal of natural products 2003 v.66 no.8 pp. 1116-1117
ISSN:
0163-3864
Subject:
soil fungi; lactones; humans; antagonists; Deuteromycotina; carbon; protons; spectral analysis; receptors; chemical structure
DOI:
10.1021/np030146m
PubMed:
12932138

81. 10. Stable isotope study of the Lake Drūkšiai food web before the Ignalina Nuclear Power Plant closure

Author:
Vytautas Rakauskas
Source:
Zoology and ecology 2014 v.24 no.2 pp. 160-167
ISSN:
2165-8013
Subject:
carbon; cooling; fish; food webs; lakes; macroinvertebrates; nitrogen; nuclear power; power plants; primary productivity; stable isotopes; thermal pollution; zoology
Abstract:
... The performed stable isotope analyses (SIA) showed the structure of the Lake Drūkšiai food web after the 25-year-long utilisation of the lake as a cooling pond of the Ignalina Nuclear Power Plant (INPP). The natural abundance of carbon (¹³C/ ¹²C) and nitrogen (¹⁵N/ ¹⁴N) stable isotopes was estimated in 19 macroinvertebrate and 11 fish species collected in 2009 and six community-wide metrics were a ...
DOI:
10.1080/21658005.2014.925233

82. 100 Years of superphosphate addition to pasture in an acid soil—current nutrient status and future management

Author:
Cassandra R. Schefe; Kirsten M. Barlow; Nathan J. Robinson; Douglas M. Crawford; Timothy I. McLaren; Ronald J. Smernik; George Croatto; Ronald D. Walsh; Matt Kitching
Source:
Soil research 2015 v.53 no.6 pp. 662-676
ISSN:
1838-675X
Subject:
aluminum; biogeochemical cycles; carbon; continuous grazing; disturbed soils; exchangeable aluminum; landscapes; ligands; long term effects; nitrogen; orthophosphates; pastures; phosphorus; phosphorus fertilizers; phytotoxicity; production technology; risk; sand fraction; soil pH; soil profiles; superphosphate; wool production; Victoria (Australia)
Abstract:
... Pasture-based animal production systems, which occupy a significant proportion of the landscape in Victoria, Australia, have historically been nutrient-limited, with phosphorus (P) often the most limiting nutrient. The Permanent Top-Dressed (PTD) pasture experiment was established in 1914 at the Rutherglen Research Station, Victoria, to investigate the management of this deficiency. The main objec ...
DOI:
10.1071/SR14241

83. 100% internal quantum efficiency in polychiral single-walled carbon nanotube bulk heterojunction/silicon solar cells

Author:
Francesco De Nicola; Matteo Salvato; Carla Cirillo; Michele Crivellari; Maurizio Boscardin; Maurizio Passacantando; Michele Nardone; Fabio De Matteis; Nunzio Motta; Maurizio De Crescenzi; Paola Castrucci
Source:
Carbon 2017 v.114 pp. 402-410
ISSN:
0008-6223
Subject:
absorption; carbon; carbon nanotubes; dissociation; electrical properties; electrodes; electrons; encapsulation; energy; hydrophobicity; photons; photovoltaic cells; physical properties; silicon; solar energy; wavelengths
Abstract:
... Bulk heterojunction films made of polychiral single-walled carbon nanotubes (SWCNTs) form efficient heterojunction solar cells with n-type crystalline silicon (n-Si), due to their superior electronic, optical, and electrical properties. The films are multi-functional, since their hierarchical surface morphology provides a biomimetical anti-reflective, air-stable, and hydrophobic encapsulation for ...
DOI:
10.1016/j.carbon.2016.12.050

84. 10B-, 11B-, 13C-NMR-Untersuchungen von closo-Pentaalkyl-1.5-dicarbapentaboranen(5) / 10B-, 11B-, 13C NMR Studies of closo-Pentaalkyl-1,5-dicarbapentaboranes(5)

Author:
Roland Köster; Bernd Wrackmeyer
Source:
Zeitschrift für Naturforschung 2014 v.36 no.6 pp. 704-707
ISSN:
0932-0776
Subject:
carbon; nuclear magnetic resonance spectroscopy; prediction; stable isotopes
Abstract:
... NMR parameters [chemical] shifts (δ¹¹B, δ¹³C) and coupling constants (¹J(¹³C¹H), ¹J(¹³C¹¹B), ¹J(¹³C¹³C), ¹J(¹¹B¹¹B) of closo-pentaalkyl-1,5-dicarbapentaboranes(5) were determinated by ¹⁰B, ¹¹B, and ¹³C NMR spectroscopy. The magnitudes of ¹J(¹³C¹¹B) and ¹J(¹³C¹³C) correspond to ¹J(¹¹B¹H), ¹J(¹³C¹¹B) and ¹J(¹³C¹H) in the parent compound 1,5-C₂B₃H₅ . According to predictions from MO calculations ¹J(¹ ...
DOI:
10.1515/znb-1981-0610

85. 11-Hydroxylation of Protoberberine by the Novel Berberine-Utilizing Aerobic Bacterium Sphingobium sp. Strain BD3100

Author:
Takeda Hisashi; Ishikawa Kazuki; Wakana Daigo; Fukuda Masao; Sato Fumihiko; Hosoe Tomoo
Source:
Journal of natural products 2015 v.78 no.12 pp. 2880-2886
ISSN:
1520-6025
Subject:
Sphingomonas; aerobes; bacteria; berberine; carbon; cytochrome P-450; energy; ketoconazole; medicinal plants; medicine; metabolism; miconazole; nuclear magnetic resonance spectroscopy; soil; spectral analysis
Abstract:
... Protoberberine alkaloids, including berberine, palmatine, and berberrubine, are produced by medicinal plants and are known to have various pharmacological effects. We isolated two berberine-utilizing bacteria, Sphingobium sp. strain BD3100 and Rhodococcus sp. strain BD7100, from soil collected at a natural medicine factory. BD3100 had the unique ability to utilize berberine or palmatine as the sol ...
DOI:
10.1021/acs.jnatprod.5b00408

86. 110th Anniversary: A Perspective on Catalytic Oxidative Processes for Sustainable Water Remediation

Author:
Mayfair C. Kung; Junqing Ye; Harold H. Kung
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.37 pp. 17325-17337
ISSN:
1520-5045
Subject:
air; biomass; carbon; catalysts; catalytic activity; energy; hydrogen peroxide; leaching; oxidants; oxidation; phase transition; pollutants; process design; remediation; water pollution; water purification
Abstract:
... Catalytic oxidation of organic pollutants is an attractive and sustainable method of water purification. This paper focuses on discussion of catalytic activity, selectivity, and stability in catalytic wet air oxidation and advanced oxidation processes. The emphasis is on exploring the potential of applying relevant catalytic knowledge and information outside the field of water remediation, such as ...
DOI:
10.1021/acs.iecr.9b04581

87. 110th Anniversary: Calcium Looping Coupled with Concentrated Solar Power for Carbon Capture and Thermochemical Energy Storage

Author:
Claudio Tregambi; Francesca Di Lauro; Fabio Montagnaro; Piero Salatino; Roberto Solimene
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.47 pp. 21262-21272
ISSN:
1520-5045
Subject:
calcium; carbon; carbon sequestration; energy; fluidized beds; irradiation; limestone; nitrogen; porosimetry; salts; solar energy; solar radiation; sorbents; thermography
Abstract:
... Concentrating solar power (CSP) technologies with energy storage can greatly enhance the dispatchability and the exploitation of solar energy in different applications. In this context, the present study addresses coupling CSP with calcium looping (CaL) along the 2-fold perspective of accomplishing: (a) carbon capture and sequestration or utilization (CCSU); (b) thermochemical energy storage (TCES ...
DOI:
10.1021/acs.iecr.9b03083

88. 110th Anniversary: Dry Reforming of Methane over Ni- and Sr-Substituted Lanthanum Zirconate Pyrochlore Catalysts: Effect of Ni Loading

Author:
Srikar Bhattar; Aiswarya Krishnakumar; Swarom Kanitkar; Ashraf Abedin; Dushyant Shekhawat; Daniel J. Haynes; James J. Spivey
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.42 pp. 19386-19396
ISSN:
1520-5045
Subject:
X-ray diffraction; carbon; catalysts; lanthanum; methane; nickel; nickel oxide; process design; streams; thermal stability; zirconium
Abstract:
... Pyrochlores are thermally stable materials that can be doped with a metal to produce active catalyst for dry reforming of methane (DRM). La₁.₉₅Sr₀.₀₅Zr₁.₉₀₄Ni₀.₀₉₆O₇–d (LSNZ1) and La₁.₉₅Sr₀.₀₅Zr₁.₄₄Ni₀.₅₆O₇–d (LSNZ6), with 1 and 6 wt % Ni loading at Zr site, respectively, were investigated for DRM. XRD of fresh catalysts confirmed the formation of pyrochlore structure. Also, the presence of the La ...
DOI:
10.1021/acs.iecr.9b02434

89. 110th Anniversary: Evaluation of CO₂-Based and CO₂-Free Synthetic Fuel Systems Using a Net-Zero-CO₂-Emission Framework

Author:
Daniel Sutter; Mijndert van der Spek; Marco Mazzotti
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.43 pp. 19958-19972
ISSN:
1520-5045
Subject:
air; ammonia; carbon; carbon dioxide; circular economy; climate change; electricity; electrolysis; exergy; hydrogen; methane; methanol; nitrogen; primary energy; process design; renewable electricity; renewable energy sources; storage time; synthetic fuels; transportation
Abstract:
... This work analyzes quantitatively the energy and exergy efficiencies of storing intermittent renewable energy in chemical fuels. In the future energy system, chemical fuels provide a very effective approach for long-term storage and long-distance transport of renewable electricity. For the sake of completeness and simplicity, we consider both carbon-free fuels, namely, hydrogen and ammonia, and ca ...
DOI:
10.1021/acs.iecr.9b00880

90. 110th Anniversary: High Performance Carbon Molecular Sieve Membrane Resistance to Aggressive Feed Stream Contaminants

Author:
Rachana Kumar; William J. Koros
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.16 pp. 6740-6746
ISSN:
1520-5045
Subject:
air; aircraft; carbon; chronic exposure; fuels; humidity; nitrogen; oxygen; ozone; process design; temperature
Abstract:
... Carbon molecular sieve (CMS) membranes show high performance for various critical gas pair separations with excellent scalable manufacturability. For practical applications it is important to evaluate such membranes for resistance to contaminants possibly present in feed streams related to an onboard inert gas generation system (OBIGGS) for aerospace applications. Here we report the performance of ...
DOI:
10.1021/acs.iecr.9b00899

91. 110th Anniversary: Influence of Solvents on Biocrude from Hydrothermal Liquefaction of Soybean Oil, Soy Protein, Cellulose, Xylose, and Lignin, and Their Quinary Mixture

Author:
Jianwen Lu; Zhidan Liu; Yuanhui Zhang; Phillip E. Savage
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.31 pp. 13971-13976
ISSN:
1520-5045
Subject:
acetone; biofuels; biomass; carbon; cellulose; feedstocks; heat; hydrogen; hydrothermal liquefaction; lignin; methylene chloride; models; process design; solvents; soy protein; soybean oil; xylose
Abstract:
... We perform hydrothermal liquefaction (HTL) on five materials that model the major biochemical components in a wide array of biomass feedstocks: soybean oil, soy protein, cellulose, xylose, and lignin. The influence of different solvents (dichloromethane, acetone, methyl tert-butyl ether (MTBE)) on the yield, and the elemental content of the biocrude recovered from isothermal and fast HTL of these ...
DOI:
10.1021/acs.iecr.9b02442

92. 110th Anniversary: Near-Total Epoxidation Selectivity and Hydrogen Peroxide Utilization with Nb-EISA Catalysts for Propylene Epoxidation

Author:
Swarup K. Maiti; Anand Ramanathan; Bala Subramaniam
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.38 pp. 17727-17735
ISSN:
1520-5045
Subject:
acidity; air; carbon; catalysts; catalytic activity; epoxidation reactions; hydrogen peroxide; hydrophobicity; leaching; nitrogen; oxidants; process design; propylene; propylene oxide
Abstract:
... The Nb-EISA catalyst with relatively low Nb loadings (∼2 wt %) shows exceptional propylene epoxidation performance with H₂O₂ as oxidant at 30–40 °C, 5–9 bar propylene pressure with nearly total propylene oxide (PO) selectivity (>99%), H₂O₂ utilization (>99%) toward PO formation, high productivity (∼3200 mg/h/g), and mild Nb leaching (3–6%). The predominantly Lewis acidic nature of the Nb-EISA cata ...
DOI:
10.1021/acs.iecr.9b03461

93. 110th Anniversary: Particle Size Effect on Enhanced Graphitization and Electrical Conductivity of Suspended Gold/Carbon Composite Nanofibers

Author:
Kunal Mondal; Tanmoy Maitra; Alok Kumar Srivastava; Gorakh Pawar; Michael D. McMurtrey; Ashutosh Sharma
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.5 pp. 1944-1952
ISSN:
1520-5045
Subject:
carbon; carbon nanofibers; drums (equipment); electrical conductivity; gold; nanogold; particle size; polyacrylonitrile
Abstract:
... The fabrication of suspended gold/carbon composite nanofibers on carbon microposts by electrospinning of a gold/polyacrylonitrile (AuNP/PAN) blend precursor is proposed. The fibers were spun on a rotating drum collector for a short duration and carbonized at 900 °C in an inert atmosphere. The in situ fabrication of a monolithic carbon structure consisting of carbon nanofibers on carbon microposts ...
DOI:
10.1021/acs.iecr.9b06592

94. 110th Anniversary: Surrogate Models Based on Artificial Neural Networks To Simulate and Optimize Pressure Swing Adsorption Cycles for CO₂ Capture

Author:
Karson T. Leperi; Daison Yancy-Caballero; Randall Q. Snurr; Fengqi You
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.39 pp. 18241-18252
ISSN:
1520-5045
Subject:
adsorbents; adsorption; artificial intelligence; carbon; carbon dioxide; data collection; energy; energy requirements; equations; fossil fuels; neural networks; process design; simulation models; zeolites
Abstract:
... Carbon capture technologies are expected to play a key role in the global energy system, as it is likely that fossil fuels will continue to be dominant in the world’s energy mix in the near future. Pressure swing adsorption (PSA) is a promising alternative among currently available technologies for carbon capture due to its low energy requirements. Still, the design of the appropriate PSA cycle fo ...
DOI:
10.1021/acs.iecr.9b02383

95. 11B- und 13C-NMR-Spektroskopie von nido-Hexaalkyl-2.3.4.5-tetracarbahexaboranen(6) / 11B- und 13C-NMR Spectroscopy of nido-Hexaalkyl-2,3,4,5-tetracarbahexaboranes(6)

Author:
Bernd Wrackmeyer
Source:
Zeitschrift für Naturforschung 2014 v.37 no.4 pp. 412-419
ISSN:
0932-0776
Subject:
carbon; isomers; nuclear magnetic resonance spectroscopy; stable isotopes
Abstract:
... ¹¹B and ¹³C NMR data of peralkylated nido-2,3,4,5-tetracarbahexaboranes(6) are reported. Application of selective heteronuclear triple resonance experiments ¹³C{¹H,¹¹B} enables to assign the structures of various isomers. The magnitude of the coupling constants ¹J(¹¹B¹¹B), ¹J(¹³C¹¹B) and ¹J(¹³C¹³C) is in accord with expectations based on the conception of bonding in carboranes. The comparison of δ ...
DOI:
10.1515/znb-1982-0405

96. 12-Tungstophosphoric acid anchored to MCM-22, as a novel sustainable catalyst for the synthesis of potential biodiesel blend, levulinate ester

Author:
Dhruvi Pithadia; Anjali Patel; Vijay Hatiya
Source:
Renewable energy 2022 v.187 pp. 933-943
ISSN:
0960-1481
Subject:
biodiesel; carbon; catalysts; catalytic activity; esterification; levulinic acid
Abstract:
... The present article demonstrates a synthesis of a green, novel and sustainable heterogeneous catalyst comprising 12-tungstophosphoric acid and zeolitic support- MCM-22. Detailed characterization of the catalyst was carried out using various physicochemical techniques and its catalytic activity was explored for the production of butyl levulinate, a potential fuel blend candidate. The comparison wit ...
DOI:
10.1016/j.renene.2022.01.106

97. 122 Proteome of extracellular vesicles from follicular fluid of bovine 3- to 6-mm follicles: Similarity and specificity compared with granulosa cells

Author:
S. Uzbekova; C. Alminana-Brines; V. Labas; L. Combes-Soia; I. I. Kireev; A.-P. Teixeira-Gomes; R. E. Uzbekov; G. N. Singina
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 188
ISSN:
1031-3613
Subject:
NAD (coenzyme); RNA-binding proteins; antioxidant activity; carbon; cattle; cell adhesion; cell communication; cell cycle; cell proliferation; cholesterol; computer software; embryo (animal); endocytosis; endoplasmic reticulum; exosomes; fatty acids; follicular fluid; gene ontology; granulosa cells; liquid chromatography; messenger RNA; metabolism; mitochondria; non-coding RNA; oocytes; peptides; polyacrylamide gel electrophoresis; protein content; protein folding; protein isoforms; proteolysis; proteome; ribosomal RNA; ribosomal proteins; sodium dodecyl sulfate; tandem mass spectrometry; translation (genetics); transmission electron microscopy; trypsin
Abstract:
... Extracellular vesicles (EVs) are released from cells and are present in most bodily fluids. Small EVs, 30-150nm in diameter, known as exosomes, transport regulatory noncoding RNA, lipids, and proteins, and thus participate in cell-to-cell communications and signalling. Exosomes from bovine ovarian follicular fluid (FF) can stimulate proliferation of granulosa cells (GCs), cellular uptake, and cumu ...
DOI:
10.1071/RDv32n2Ab122

98. 13-year nitrogen addition increases nonstructural carbon pools in subtropical forest trees in southern China

Author:
Juan Huang; Xinming Wang; Mianhai Zheng; Jiangming Mo
Source:
Forest ecology and management 2021 v.481 pp. 118748
ISSN:
0378-1127
Subject:
Castanopsis; Pinus massoniana; administrative management; broadleaved trees; carbon; carbon sinks; chloroplasts; ecosystems; forest ecology; global change; nitrogen; photosynthesis; plant growth; starch; sugars; tropical forests; volatile organic compounds; wet season; China
Abstract:
... Nonstructural carbohydrates (NSC) are important for plant growth and defense, and represent an important carbon pool that contributes to carbon (C) cycling and balance, but we know little about the variation of NSC in trees under global change scenarios, particularly nitrogen (N) deposition. Here, we investigated the responses of NSC (sugar and starch) pools of two dominant tree species (Castanops ...
DOI:
10.1016/j.foreco.2020.118748

99. 137Cs depth distribution in Haplic-Udic Ferrosols of southern China and its implication for soil erosion

Author:
Tang, X.; Yang, H.; Zhao, Q.; Li, R.; Du, M.
Source:
Soil science 2002 v.167 no.2 pp. 147-163
ISSN:
0038-075X
Subject:
water erosion; cesium; radionuclides; depth; agricultural soils; clay fraction; soil organic matter; carbon; particle size distribution; dryland farming; paddy soils; China
DOI:
10.1097/00010694-200202000-00007

100. 13C CP/MAS NMR study of a wood/phenol–formaldehyde resin bondline

Author:
Marie-Pierre G. Laborie; Charles E. Frazier
Source:
Journal of materials science 2006 v.41 no.18 pp. 6001-6005
ISSN:
0022-2461
Subject:
Liriodendron tulipifera; carbon; isotope labeling; molecular weight; nuclear magnetic resonance spectroscopy; stable isotopes; wood
Abstract:
... The dynamics and interactions of a wood powder/phenol–formaldehyde (PF) resin composite are evaluated by solid-state ¹³C NMR. A ¹³C labeled and perdeuterated PF resin, with low molecular weight distribution, is synthesized and cured in the neat state and also in combination with yellow-poplar wood powder. The ¹³C NMR spectral features and cross-polarization dynamics of the PF hydroxymethyl and met ...
DOI:
10.1007/s10853-006-0497-6