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1. Self-interlocked MXene/polyvinyl alcohol aerogel network to enhance interlaminar fracture toughness of carbon fibre/epoxy composites

Author:
Zhipeng Zhou; Nan Zheng; Weifu Sun
Source:
Carbon 2023 v.201 pp. 60-70
ISSN:
0008-6223
Subject:
alcohols,   etc   ; aerogels; carbon; carbon fibers; delamination; epoxides; polyvinyl alcohol; skeleton; toxicity;     Show all 9 Subjects
Abstract:
... Interlaminar delamination is the most prevalent failure mode for carbon fiber reinforced epoxy (CF/EP) composites, which limits its applications. In this work, the interlaminar fracture toughness of CF/EP composites has been enhanced by the self-interlocked network arisen from Ti₃C₂Tₓ/polyvinyl alcohol (PVA) aerogel (TPA). The failure mode and toughening mechanism of interlocked TPA/CF/EP laminate ...
DOI:
10.1016/j.carbon.2022.08.081

2. Assessment and optimization of As(V) adsorption on hydrogel composite integrating chitosan-polyvinyl alcohol and Fe3O4 nanoparticles and evaluation of their regeneration and reusable capabilities in aqueous media

Author:
Lakshika Weerasundara; Yong Sik Ok; Prasanna Kumarathilaka; Alla Marchuk; Jochen Bundschuh
Source:
Science of the total environment 2023 v.855 pp. 158877
ISSN:
0048-9697
Subject:
alcohols,   etc   ; adsorption; arsenic; environment; filtration; hydrogels; models; nanoparticles; pH; polymers; protonation; sorption isotherms;     Show all 12 Subjects
Abstract:
... A modified chitosan-polyvinyl alcohol (PVA) hydrogel was developed by incorporating Fe₃O₄ nanoparticles. Four chitosan-Fe₃O₄ (ChFe) hydrogel types were developed based on chitosan:Fe₃O₄ ratio as 1:0, 1:1, 1:0.5 and 1:0.25. Batch sorption experiments were conducted with different pH, dosage, kinetics, and isotherms. The exhausted ChFe hydrogels were evaluated for their regeneration and reuse capabi ...
DOI:
10.1016/j.scitotenv.2022.158877

3. Absorbance-transmission and fluorescence excitation-emission matrix (A-TEEM) with multi-block data analysis and machine learning for accurate intraregional classification of Barossa Shiraz wine

Author:
Ranaweera K.R. Ranaweera; Susan E.P. Bastian; Adam M. Gilmore; Dimitra L. Capone; David W. Jeffery
Source:
Food control 2023 v.144 pp. 109335
ISSN:
0956-7135
Subject:
alcohols,   etc   ; absorption; cluster analysis; data collection; discriminant analysis; fluorescence; food safety; fructose; glucose; pH; principal component analysis; titratable acidity; wines;     Show all 13 Subjects
Abstract:
... Authentication of wine can be considered at different scales, with classification according to country, province/state, or appellation/wine producing region. An absorbance-transmission and excitation-emission matrix (A-TEEM) technique was applied for the first time to examine intraregional differences, using Shiraz wines (n = 186) produced during three vintages from five subregions of Barossa Vall ...
DOI:
10.1016/j.foodcont.2022.109335

4. An ultra-sensitive UHPLC-QqQ-MS/MS method for determination of 54 benzodiazepines (pharmaceutical drugs, NPS and metabolites) and z-drugs in biological samples

Author:
Olga Wachełko; Paweł Szpot; Kaja Tusiewicz; Karolina Nowak; Agnieszka Chłopaś-Konowałek; Marcin Zawadzki
Source:
Talanta 2023 v.251 pp. 123816
ISSN:
0039-9140
Subject:
alcohols,   etc   ; anticonvulsants; anxiety; benzodiazepines; bile; blood; central nervous system; epilepsy; forensic sciences; illicit drugs; markets; medical treatment; metabolites; sedatives; sleep disorders; toxicity testing; urine;     Show all 17 Subjects
Abstract:
... Benzodiazepines exhibit central nervous system depressive activity as well as sedative, hypnotic, and anticonvulsant properties, which enable to use them as medical treatment in anxiety, epilepsy, insomnia and alcohol withdrawal syndrome. However, from 2000s illegal benzodiazepine derivatives have started to emerge on illicit drug market as new psychoactive substances (NPSs) monitored in many coun ...
DOI:
10.1016/j.talanta.2022.123816

5. Changes in arsenic accumulation and metabolic capacity after environmental management measures in mining area

Author:
Chen Zhao; Meng Du; Jun Yang; Guanghui Guo; Lingqing Wang; Yunxian Yan; Xuewen Li; Mei Lei; Tongbin Chen
Source:
Science of the total environment 2023 v.855 pp. 158652
ISSN:
0048-9697
Subject:
alcohols,   etc   ; alcohol drinking; algorithms; arsenic; biochemical pathways; biomarkers; biomass; cigarettes; environment; fuels; males; metabolism; metabolites; methylation; occupations; public health; soil remediation; soil restoration; urine; vegetables; wood; China;     Show all 22 Subjects
Abstract:
... Due to the public health concern of arsenic, environmental management measures in mining areas had been implemented. To assess the effect of environmental management measures in the mining area comprehensively, arsenic accumulation in the urine, hair, nails, and urinary metabolites of residents in a realgar mining area in Hunan province, China were investigated in 2019, and the changes in arsenic ...
DOI:
10.1016/j.scitotenv.2022.158652

6. Combining LC-MS/MS profiles with network pharmacology to predict molecular mechanisms of the hyperlipidemic activity of Lagenaria siceraria stand

Author:
Subhadip Banerjee; Amrendra Tiwari; Amit Kar; Joydeb Chanda; Sayan Biswas; Gudrun Ulrich-Merzenich; Pulok K. Mukherjee
Source:
Journal of ethnopharmacology 2023 v.300 pp. 115633
ISSN:
0378-8741
Subject:
alcohols,   etc   ; Ayurvedic medicine; Lagenaria siceraria; albino; animals; atorvastatin; bioinformatics; computer simulation; ferulic acid; food plants; hesperidin; high fat diet; hyperlipidemia; hypertension; insulin; lipids; mechanism of action; metabolites; obesity; p-coumaric acid; pharmacology;     Show all 21 Subjects
Abstract:
... Lagenaria siceraria Stand. (Family: Cucurbitaceae), popularly known as bottle gourd, is traditionally used in Ayurvedic medicine as a food plant, especially in hypertension and obesity. Investigations were undertaken to assign novel lead combinations from this common food plant to multi-molecular modes of actions in the complex disease networks of obesity and hypertension. LC–MS/MS based metabolit ...
DOI:
10.1016/j.jep.2022.115633

7. Benzyl chlorides as aldehyde surrogates in the Prins cyclization: Direct access to 2-aryl-4-chlorotetrahydropyrans

Author:
E. Pravardhan Reddy; P. Padmaja; P. Chandra Shekar; K. Kamalaker Reddy; B.V. Subba Reddy
Source:
Tetrahedron letters 2022 v.97 pp. 153746
ISSN:
0040-4039
Subject:
alcohols,   etc   ; aldehydes; oxidation;     Show all 3 Subjects
Abstract:
... An efficient synthesis of 2-aryl-4-chloro-tetrahydropyrans has been accomplished from benzyl chlorides and homoallylic alcohols using FeCl₃ as a promoter through a sequential oxidation/Prins cyclization in high yields. This is the first report on the use of benzyl chlorides as surrogates for aldehydes in the Prins cyclization. ...
DOI:
10.1016/j.tetlet.2022.153746

8. Pt/Mn₃O₄ cubes with high anti-poisoning ability for C1 and C2 alcohol fuel oxidation

Author:
Jia Xue; Xiang Wu; Ligang Feng
Source:
Chemical communications 2022 v.58 no.14 pp. 2371-2374
ISSN:
1364-548X
Subject:
alcohols,   etc   ; electrolytes; oxidation;     Show all 3 Subjects
Abstract:
... Pt particles anchored onto Mn₃O₄ cubes were found to have high anti-CO poisoning abilities for C1- and C2-alcohol fuel oxidations in acid electrolyte, due to an electronic effect that enriched the surfaces of the Pt particles with electrons and due to the oxophilicity of Mn₃O₄ in the system. ...
DOI:
10.1039/d2cc00105e

9. Synthesis of pyrano[3,2-c]quinolones and furo[3,2-c]quinolones via acid-catalyzed tandem reaction of 4-hydroxy-1-methylquinolin-2(1H)-one and propargylic alcohols

Author:
Haiting Yin; Yunjun Wu; Xiaoxia Gu; Zhijun Feng; Meifang Wang; Dexiang Feng; Ming Wang; Ziyang Cheng; Shaoyin Wang
Source:
RSC advances 2022 v.12 no.33 pp. 21066-21078
ISSN:
2046-2069
Subject:
alcohols,   etc   ; alkylation; quinolones;     Show all 3 Subjects
Abstract:
... Two acid-catalyzed tandem reactions between 4-hydroxy-1-methylquinolin-2(1H)-one and propargylic alcohols are described. Depending mainly on the propargylic alcohol used, these tandem reactions proceed via either a Friedel–Crafts-type allenylation followed by 6-endo-dig cyclization sequence to form pyrano[3,2-c]quinolones or a Friedel–Crafts-type alkylation and 5-exo-dig ring closure sequence to a ...
DOI:
10.1039/d2ra03416f

10. A Stereoselective Photoinduced Cycloisomerization Inspired by Ophiobolin A

Author:
James A. Law; Daniel P. Callen; Elena L. Paola; Gabe Gomes; James H. Frederich
Source:
Organic letters 2022 v.24 no.36 pp. 6499-6504
ISSN:
1523-7052
Subject:
alcohols,   etc   ; pharmacology; stereoselectivity;     Show all 3 Subjects
Abstract:
... A stereoselective synthetic entry point to the 5–8–5 carbocyclic core of the ophiobolins was developed. This strategy exploits the chiral tertiary alcohol of ophiobolin A to guide assmebly of the 5–8–5 scaffold in a single step via a photoinitiated cycloisomerization. Mechanistic insights into the origin of stereocontrol in this reaction are described, as are efforts to elaborate the resultant fus ...
DOI:
10.1021/acs.orglett.2c02272

11. Rhenium complex-catalyzed deoxygenation and silylation of alcohols with hydrosilane

Author:
Yutaka Nishiyama; Shijie Xu; Yuuki Hanatani; Susumu Tsuda; Rui Umeda
Source:
Tetrahedron letters 2022 v.99 pp. 153839
ISSN:
0040-4039
Subject:
alcohols,   etc   ; alkanes; rhenium; silylation;     Show all 4 Subjects
Abstract:
... The reduction of benzylic, tertiary, and allylic alcohols with hydrosilane was efficiently catalyzed by the rhenium complex, such as ReBr(CO)₅, to give the corresponding deoxygenarated products, alkanes, in moderate to good yields. In the case of aliphatic secondary alcohol, the alkane was formed along with the formation of dehydrated products. On the other hand, in the case of primary and cyclic ...
DOI:
10.1016/j.tetlet.2022.153839

12. Synthesis and synthetic applications of (4-hydroxyphenyl)perfluoroalkylmethanols

Author:
Kyu Terashima; Tomoko Kawasaki-Takasuka; Ichiro Minami; Takashi Yamazaki
Source:
Tetrahedron 2022 v.104 pp. 132574
ISSN:
0040-4020
Subject:
alcohols,   etc   ; chlorides; ketones; methodology;     Show all 4 Subjects
Abstract:
... Development of the convenient method for the synthesis of (hydroxyphenyl)perfluoro-alkylmethanols was achieved by the Meerwein-Ponndorf-Verley (MPV) type reduction of the in situ-generated perfluoroalkylated ketones as the key step. The benzylic OH group of the resultant alcohols was successfully converted to H or Rf(CH₂)ₙO by way of the corresponding chlorides, this transformation being not easy ...
DOI:
10.1016/j.tet.2021.132574

13. Two-Step Method for Constructing a Quaternary Carbon Atom with a Geminal Divinyl Group from a Ketone

Author:
Ryota Ogura; Kazuto Satoh; Wataru Kiuchi; Kosuke Kato; Kazutada Ikeuchi; Takahiro Suzuki; Keiji Tanino
Source:
Organic letters 2022 v.24 no.28 pp. 5040-5044
ISSN:
1523-7052
Subject:
alcohols,   etc   ; carbon; moieties; titanium;     Show all 4 Subjects
Abstract:
... A two-step synthesis of geminal divinyl compounds from ketones was developed. An allyl titanium reagent prepared from 1-phenylthio-4-trimethylsilyl-2-butene was reacted with a ketone, and the resulting tertiary alcohol was subjected to a Brønsted acid-mediated rearrangement reaction to generate a geminal divinyl compound. Introduction of another alkene moiety followed by ring closing metathesis re ...
DOI:
10.1021/acs.orglett.2c01799

14. Photoredox-Catalyzed Allylic Defluorinative Alkoxycarbonylation of Trifluoromethyl Alkenes through Intermolecular Alkoxycarbonyl Radical Addition

Author:
Jia-Xin Wang; Wei Ge; Ming-Chen Fu; Yao Fu
Source:
Organic letters 2022 v.24 no.7 pp. 1471-1475
ISSN:
1523-7052
Subject:
alcohols,   etc   ; alkenes; moieties; oxalates;     Show all 4 Subjects
Abstract:
... The gem-difluoroalkene moiety is an ideal carbonyl bioisostere in medicinal chemistry, but efficient synthesis of β-gem-difluoroalkene esters remains challenging so far. Herein, we disclose a photoredox-catalyzed allylic defluorinative alkoxycarbonylation of trifluoromethyl alkenes enabled by intermolecular alkoxycarbonyl radical addition. A wide variety of alcohol oxalate derivatives were amenabl ...
DOI:
10.1021/acs.orglett.1c04359

15. Total Syntheses of Calyciphylline A-Type Alkaloids (−)-10-Deoxydaphnipaxianine A, (+)-Daphlongamine E and (+)-Calyciphylline R via Late-Stage Divinyl Carbinol Rearrangements

Author:
Yan Zhang; Yuye Chen; Manrong Song; Bin Tan; Yujia Jiang; Chongyuan Yan; Yuyang Jiang; Xinyue Hu; Chengqian Zhang; Wenqing Chen; Jing Xu
Source:
Journal of the American Chemical Society 2022 v.144 no.35 pp. 16042-16051
ISSN:
1520-5126
Subject:
alcohols,   etc   ; Daphniphyllum; catalysts; platinum;     Show all 4 Subjects
Abstract:
... Among the famous Daphniphyllum alkaloids family, the calyciphylline A-type subfamily has triggered particular interest from the organic synthesis community in recent years. Here, we report divergent total syntheses of three calyciphylline A-type alkaloids, namely, (−)-10-deoxydaphnipaxianine A, (+)-daphlongamine E, and (+)-calyciphylline R. Our work highlights an efficient, divergent strategy via ...
DOI:
10.1021/jacs.2c05957

16. Kinetic Resolution of Tertiary Alcohols by Chiral Organotin-Catalyzed O-Acylation

Author:
Jian Song; Wen-Hua Zheng
Source:
Organic letters 2022 v.24 no.12 pp. 2349-2353
ISSN:
1523-7052
Subject:
alcohols,   etc   ; acylation; enantioselectivity; methodology;     Show all 4 Subjects
Abstract:
... A novel highly enantioselective method for the kinetic resolution of racemic tertiary alcohols has been achieved through chiral organotin-catalyzed intermolecular acylation of the hydroxyl group. This process has demonstrated a broad substrate scope (both alkyl- and aryl-substituted tertiary alcohols) with high enantioselectivity under mild reaction conditions, affording the corresponding products ...
DOI:
10.1021/acs.orglett.2c00537

17. Strategies for the direct oxidative esterification of thiols with alcohols

Author:
Manzarbanou Asnaashariisfahani; Bayan Azizi; Mohammad Reza Poor Heravi; Elham Mohammadi; Sattar Arshadi; Esmail Vessally
Source:
RSC advances 2022 v.12 no.23 pp. 14521-14534
ISSN:
2046-2069
Subject:
alcohols,   etc   ; esterification; esters; thiols;     Show all 4 Subjects
Abstract:
... This review paper provides an overview of the main strategies for the oxidative esterification of thiols with alcohols. The review is divided into two major parts according to final products. The first includes the methods for the synthesis of sulfinic esters, while the second contains the procedures for the fabrication of sulfonic ester derivatives. ...
DOI:
10.1039/d1ra08058j

18. Synthesis of a Bent, Twisted, and Chiral Phenanthrene via an Iodine Monochloride-Mediated, Strain-Inducing π-Extension Reaction

Author:
Nirob K. Saha; Timothy H. Barnes; Laura J. Wilson; Bradley L. Merner
Source:
Organic letters 2022 v.24 no.4 pp. 1038-1042
ISSN:
1523-7052
Subject:
alcohols,   etc   ; aromatization; iodine; phenanthrenes;     Show all 4 Subjects
Abstract:
... A strategy for the synthesis of substituted and strained p-phenylene units is reported. An oxidative allylic alcohol rearrangement, followed by organometallic addition to the resulting α-ketol and subsequent dehydrative aromatization, affords p-terphenyl-containing macrocycles in which the central p-phenylene has been selectively substituted. Ten 18-membered macrocycles have been synthesized, eigh ...
DOI:
10.1021/acs.orglett.1c04233

19. Synthesis of β-mono- and β,γ-di-substituted α-methylene-γ-lactams

Author:
Alexis Hernández-Guadarrama; Fernando Cuevas; Iris J. Montoya-Balbás; Perla Román-Bravo; Irma Linzaga-Elizalde
Source:
Tetrahedron letters 2022 v.107 pp. 154105
ISSN:
0040-4039
Subject:
alcohols,   etc   ; microwave radiation; nitroalkanes;     Show all 3 Subjects
Abstract:
... A series of β-mono- and β,γ-di-substituted α-methylene-γ-lactams was synthesized. This method involves the 1,4-addition of nitroalkanes to arylidenemalonates to obtain nitro derivatives using a conventional method and microwave irradiation. Subsequent nitro reduction provided α-carbomethoxy-γ-lactam, a versatile molecule that was used to obtain the alcohol. After alcohol, the mesylate was obtained ...
DOI:
10.1016/j.tetlet.2022.154105

20. DNA-Compatible Diversification of Indole π-Activated Alcohols via a Direct Dehydrative Coupling Strategy

Author:
Shuting Zhong; Xianfu Fang; Yiting Wang; Gong Zhang; Yangfeng Li; Yizhou Li
Source:
Organic letters 2022 v.24 no.4 pp. 1022-1026
ISSN:
1523-7052
Subject:
alcohols,   etc   ; couplings; indoles; libraries; methodology;     Show all 5 Subjects
Abstract:
... Indole-based diversification is highly desired in the DNA-encoded chemical library construction. Herein, we present a general strategy for on-DNA synthesis of diverse C3-functionalized indole derivatives via indole π-activated alcohol formation followed by direct dehydrative coupling. Highly efficient bond linkages of C–C, C–N, and C–S were achieved to fuse building blocks that are widely commerci ...
DOI:
10.1021/acs.orglett.1c04169