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1. Recent advances in the synthesis of fluorinated hydrazones

Author:
Guo, Rui; Chen, Junting
Source:
RSC advances 2018 v.8 no.31 pp. 17110-17120
ISSN:
2046-2069
Subject:
agrochemicals,   etc   ; drugs; hydrazones;     Show all 3 Subjects
Abstract:
... Fluorinated compounds are widely used in pharmaceuticals, agrochemicals, and materials. As an important branch of fluorinated compounds, the introduction of fluorinated hydrazones remains unexplored due to the lack of convenient methods. However, as a powerful platform for generation of various fluorinated pyrazole species and diverse nitrogen-containing compounds, fluorinated hydrazones have been ...
DOI:
10.1039/c8ra02533a

2. Efficient asymmetric synthesis of aryl difluoromethyl sulfoxides and their use to access enantiopure α-difluoromethyl alcohols

Author:
Batisse, Chloé; Céspedes Dávila, Maria F.; Castello, Marco; Messara, Amélia; Vivet, Bertrand; Marciniak, Gilbert; Panossian, Armen; Hanquet, Gilles; Leroux, Frédéric R.
Source:
Tetrahedron 2019 v.75 no.23 pp. 3063-3079
ISSN:
0040-4020
Subject:
agrochemicals,   etc   ; carbon; chemical reactions; diastereoselectivity; enantiomers; enantioselectivity; moieties;     Show all 7 Subjects
Abstract:
... The -CHF2 moiety has shown a growing interest in pharmaceutical and agrochemical applications over the last few years. Its introduction is therefore a current research topic for organic chemists. Several groups have reported the synthesis of difluoromethylated compounds. However, the more challenging enantioselective introduction of the difluoromethyl group has been scarcely described yet. We rece ...
DOI:
10.1016/j.tet.2019.04.037

3. Alkenyl Exchange of Allylamines via Nickel(0)-Catalyzed C–C Bond Cleavage

Author:
Fan, Chao; Lv, Xin-Yang; Xiao, Li-Jun; Xie, Jian-Hua; Zhou, Qi-Lin
Source:
Journal of the American Chemical Society 2019 v.141 no.7 pp. 2889-2893
ISSN:
1520-5126
Subject:
agrochemicals,   etc   ; alkenes; chemical bonding; cleavage (chemistry); drugs; imines; moieties; nickel;     Show all 8 Subjects
Abstract:
... A functional group exchange reaction between allylamines and alkenes via nickel-catalyzed C—C bond cleavage and formation was developed. This reaction provides a novel protocol, which does not require the use of unstable imine substrates, for the synthesis of allylamines, which are widely used in the production of fine chemicals, pharmaceuticals, and agrochemicals. ...
DOI:
10.1021/jacs.8b13251

4. Amphiphilic fluorous random copolymer self‐assembly for encapsulation of a fluorinated agrochemical

Author:
Ko, Jeong Hoon; Bhattacharya, Arvind; Terashima, Takaya; Sawamoto, Mitsuo; Maynard, Heather D.
Source:
Journal of polymer science 2019 v.57 no.3 pp. 352-359
ISSN:
0887-624X
Subject:
agrochemicals,   etc   ; composite polymers; encapsulation; hydrophilicity; hydrophobicity; nanoparticles; polyethylene glycol; trehalose;     Show all 8 Subjects
Abstract:
... Amphiphilic self‐folding random copolymers exhibit different solution behaviors depending on the identity of the hydrophobic/hydrophilic units. Herein, it is demonstrated that changing the hydrophilic unit from poly(ethylene glycol) to the sugar trehalose causes increased discrepancy in the polarity difference with a fluorinated hydrophobic segment and changes the aggregation state of the polymer ...
DOI:
10.1002/pola.29187

5. “One family, two systems”: Food safety crisis as a catalyst for agrarian changes in rural China

Author:
Si, Zhenzhong; Li, Yanyan; Fang, Ping; Zhou, Li
Source:
Journal of rural studies 2019 v.69 pp. 87-96
ISSN:
0743-0167
Subject:
agrochemicals,   etc   ; catalysts; farmers; food consumption; food production; food safety; households; markets; politics; social networks; China;     Show all 11 Subjects
Abstract:
... The political economy of agrarian changes in rural China has attracted much scholarly attention. Yet these studies have placed limited emphasis on the role of food safety crisis, a critical issue that not only motivated consumption changes of urban residents, but also catalyzed a differentiated food production and supply scheme in rural China. Our extensive fieldwork revealed that more than 60% of ...
DOI:
10.1016/j.jrurstud.2019.04.011

6. The magnitude and variability of lateral seepage in California rice fields

Author:
LaHue, Gabriel T.; Linquist, Bruce A.
Source:
Journal of hydrology 2019 v.574 pp. 202-210
ISSN:
0022-1694
Subject:
agrochemicals,   etc   ; drainage channels; growing season; infiltrometers; irrigation; nutrients; paddies; pesticides; preferential flow; seepage; soil properties; California;     Show all 12 Subjects
Abstract:
... Lateral seepage can be an important water loss pathway at the field level and a conduit for the discharge of pesticides and nutrients from rice fields. However, few studies have directly measured lateral seepage rates in flooded rice fields. This study sought to characterize the magnitude and variability of lateral seepage in California rice fields, and to explore the relationship between lateral ...
DOI:
10.1016/j.jhydrol.2019.04.030

7. Synergistic effects of glyphosate formulation herbicide and tank-mixing adjuvants on Pardosa spiders

Author:
Niedobová, Jana; Skalský, Michal; Ouředníčková, Jana; Michalko, Radek; Bartošková, Adéla
Source:
Environmental pollution 2019 v.249 pp. 338-344
ISSN:
0269-7491
Subject:
agrochemicals,   etc   ; Diptera; Pardosa; adjuvants; agroecosystems; beneficial arthropods; forests; gardens; glyphosate; plant protection; surfactants; synergism;     Show all 12 Subjects
Abstract:
... Glyphosate-based herbicides are the world’s most consumed agrochemicals, and they are commonly used in various agroecosystems, including forests, as well as in urban zones and gardens. These herbicides are sold as formulations containing adjuvants. Other tank-mixing adjuvants (most often surfactants) are commonly added to these formulations prior to application. According to the manufacturers of a ...
DOI:
10.1016/j.envpol.2019.03.031

8. Potential of microalgae as biopesticides to contribute to sustainable agriculture and environmental development

Author:
Costa, Jorge Alberto Vieira; Freitas, Bárbara Catarina Bastos; Cruz, Camila Gonzales; Silveira, Jéssica; Morais, Michele Greque
Source:
Journal of environmental science and health 2019 v.54 no.5 pp. 366-375
ISSN:
1532-4109
Subject:
agrochemicals,   etc   ; agroecology; animals; biomass; biopesticides; metabolites; microalgae; pests; risk; soil; sustainable agriculture;     Show all 11 Subjects
Abstract:
... The loss of yields from agricultural production due to the presence of pests has been treated over the years with synthetic pesticides, but the use of these substances negatively affects the environment and presents health risks for consumers and animals. The development of agroecological systems using biopesticides represents a safe alternative that contributes to the reduction of agrochemical us ...
DOI:
10.1080/03601234.2019.1571366

9. Pesticides and pollinators: A socioecological synthesis

Author:
Sponsler, Douglas B.; Grozinger, Christina M.; Hitaj, Claudia; Rundlöf, Maj; Botías, Cristina; Code, Aimee; Lonsdorf, Eric V.; Melathopoulos, Andony P.; Smith, David J.; Suryanarayanan, Sainath; Thogmartin, Wayne E.; Williams, Neal M.; Zhang, Minghua; Douglas, Margaret R.
Source:
The Science of the total environment 2019 v.662 pp. 1012-1027
ISSN:
0048-9697
Subject:
agrochemicals,   etc   ; accounting; case studies; farmers; guidelines; issues and policy; pesticides; pollinators; public opinion; stakeholders;     Show all 10 Subjects
Abstract:
... The relationship between pesticides and pollinators, while attracting no shortage of attention from scientists, regulators, and the public, has proven resistant to scientific synthesis and fractious in matters of policy and public opinion. This is in part because the issue has been approached in a compartmentalized and intradisciplinary way, such that evaluations of organismal pesticide effects re ...
DOI:
10.1016/j.scitotenv.2019.01.016

10. Friends or Foes? Emerging Impacts of Biological Toxins

Author:
Clark, Graeme C.; Casewell, Nicholas R.; Elliott, Christopher T.; Harvey, Alan L.; Jamieson, Andrew G.; Strong, Peter N.; Turner, Andrew D.
Source:
Trends in biochemical sciences 2019 v.44 no.4 pp. 365-379
ISSN:
0968-0004
Subject:
agrochemicals,   etc   ; animals; climate change; food supply chain; globalization; insecticides; microorganisms; plants (botany); risk; toxins;     Show all 10 Subjects
Abstract:
... Toxins are substances produced from biological sources (e.g., animal, plants, microorganisms) that have deleterious effects on a living organism. Despite the obvious health concerns of being exposed to toxins, they are having substantial positive impacts in a number of industrial sectors. Several toxin-derived products are approved for clinical, veterinary, or agrochemical uses. This review sets o ...
DOI:
10.1016/j.tibs.2018.12.004

11. Sulfonamide Synthesis through Electrochemical Oxidative Coupling of Amines and Thiols

Author:
Laudadio, Gabriele; Barmpoutsis, Efstathios; Schotten, Christiane; Struik, Lisa; Govaerts, Sebastian; Browne, Duncan L.; Noël, Timothy
Source:
Journal of the American Chemical Society 2019 v.141 no.14 pp. 5664-5668
ISSN:
1520-5126
Subject:
agrochemicals,   etc   ; amines; byproducts; catalysts; drugs; electricity; electrochemistry; electrodes; hydrogen; moieties; thiols;     Show all 11 Subjects
Abstract:
... Sulfonamides are key motifs in pharmaceuticals and agrochemicals, spurring the continuous development of novel and efficient synthetic methods to access these functional groups. Herein, we report an environmentally benign electrochemical method which enables the oxidative coupling between thiols and amines, two readily available and inexpensive commodity chemicals. The transformation is completely ...
DOI:
10.1021/jacs.9b02266

12. Feasibility of a Solid set canopy delivery system for efficient agrochemical delivery in vertical shoot position trained vineyards

Author:
Sinha, Rajeev; Khot, Lav R.; Hoheisel, Gwen-Alyn; Grieshop, Matthew J.; Bahlol, Haitham
Source:
Biosystems engineering 2019 v.179 pp. 59-70
ISSN:
1537-5110
Subject:
agrochemicals,   etc   ; Vitis; air-assisted sprayers; canopy; developmental stages; humans; leaves; spray deposition; vines; vineyards;     Show all 10 Subjects
Abstract:
... Solid set canopy delivery systems (SSCDS) offer advantages such as reduced off–target drift and human exposure to chemicals compared to conventional axial–fan airblast sprayers. In this study, six different SSCDS configurations (C1–C6) with two different emitter types (E1 and E2) were installed in a vertical shoot position (VSP) trained grapevine and evaluated for spray deposition and coverage dur ...
DOI:
10.1016/j.biosystemseng.2018.12.011

13. PLGA–PEG terpolymers as a carriers of bioactive agents, influence of PEG blocks content on degradation and release of herbicides into soil

Author:
Rychter, Piotr; Lewicka, Kamila; Pastusiak, Małgorzata; Domański, Marian; Dobrzyński, Piotr
Source:
Polymer degradation and stability 2019 v.161 pp. 95-107
ISSN:
0141-3910
Subject:
agrochemicals,   etc   ; activated sludge; composite polymers; crystal structure; edaphic factors; hydrophilicity; leaching; metazachlor; pendimethalin; soil;     Show all 10 Subjects
Abstract:
... Nowadays, researchers in the field of agrochemicals are trying to find effective methods to limit the excessive usage of pesticides and protect the environment. One of the most popular and promising techniques is the immobilization of pesticides using environment-friendly polymers. In the conducted research, it was demonstrated that the family of lactide/glycolide copolymers are unsuitable for thi ...
DOI:
10.1016/j.polymdegradstab.2019.01.002

14. Sowing seeds for the future: The need for on-site plant diagnostics

Author:
Cassedy, Arabelle; Mullins, Ewen; O'Kennedy, Richard
Source:
Biotechnology advances 2019
ISSN:
0734-9750
Subject:
agrochemicals,   etc   ; crop losses; diagnostic techniques; environmental impact; pathogens; point-of-care systems;     Show all 6 Subjects
Abstract:
... Point-of-care technology is a term used to describe any treatment given at the “site-of-need”. The span of point-of-care has broadened, growing from its current dominant usage in clinical settings to encompass many sectors, such as water and food testing. This review focuses on applications of point-of-care/use technology in phytodiagnostics, a field which requires accurate diagnostic systems with ...
DOI:
10.1016/j.biotechadv.2019.02.014

15. Biaryl synthesis with arenediazonium salts: cross-coupling, CH-arylation and annulation reactions

Author:
Felpin, François-Xavier; Sengupta, Saumitra
Source:
Chemical Society reviews 2019 v.48 no.4 pp. 1150-1193
ISSN:
1460-4744
Subject:
agrochemicals,   etc   ; alkynes; aromatic hydrocarbons; carbon nanotubes; cross-coupling reactions; electrodes; nucleosides; peptides; salts;     Show all 9 Subjects
Abstract:
... The rich legacy of arenediazonium salts in the synthesis of unsymmetrical biaryls, built around the seminal works of Pschorr, Gomberg and Bachmann more than a century ago, continues to make important contributions at various evolutionary stages of modern biaryl synthesis. Based on in-depth mechanistic analysis and design of novel pathways and reaction conditions, the scope of biaryl synthesis with ...
DOI:
10.1039/c8cs00453f

16. Chemoselective hydrogenation of nitrobenzenes activated with tuned Au/h-BN

Author:
Liu, Qiuwen; Xu, Yan; Qiu, Xiaoqing; Huang, Caijin; Liu, Min
Source:
Journal of catalysis 2019 v.370 pp. 55-60
ISSN:
0021-9517
Subject:
agrochemicals,   etc   ; air; boron nitride; catalytic activity; chemoselectivity; drugs; hydrogenation; isopropyl alcohol; nanogold; nitrobenzenes; potassium hydroxide;     Show all 11 Subjects
Abstract:
... The azo- and hydrazo compounds are of great importance in pharmaceuticals, agrochemicals, and chemistry. The controlled reduction of nitroarenes to their coupled products such as aromatic azo and hydrazo compounds has been an interesting area of research synthetically and mechanistically. Herein, we report that the chemoselective catalytic hydrogenation of nitrobenzenes to hydrazobenzenes via azob ...
DOI:
10.1016/j.jcat.2018.12.008

17. Complex coacervation: Principles, mechanisms and applications in microencapsulation

Author:
Timilsena, Yakindra Prasad; Akanbi, Taiwo O.; Khalid, Nauman; Adhikari, Benu; Barrow, Colin J.
Source:
International journal of biological macromolecules 2019 v.121 pp. 1276-1286
ISSN:
0141-8130
Subject:
agrochemicals,   etc   ; agricultural land; ambient temperature; electrolytes; microencapsulation; plant proteins; polymers; textile industry;     Show all 8 Subjects
Abstract:
... Complex coacervation is a highly promising microencapsulation technique that is extensively employed in pharmaceutical, food, agriculture and textile industries. The process involves the interaction of oppositely charged polyelectrolytes in aqueous form. High payload and high encapsulation efficiency (up to 99%), relatively lower cost of processing, ability to use food-grade shell materials and sy ...
DOI:
10.1016/j.ijbiomac.2018.10.144

18. Enzymatic synthesis of sitagliptin intermediate using a novel ω-transaminase

Author:
Kim, Geon-Hee; Jeon, Hyunwoo; Khobragade, Taresh P.; Patil, Mahesh D.; Sung, Sihyong; Yoon, Sanghan; Won, Yumi; Choi, In Suk; Yun, Hyungdon
Source:
Enzyme and microbial technology 2019 v.120 pp. 52-60
ISSN:
0141-0229
Subject:
agrochemicals,   etc   ; amino acids; carboxylic ester hydrolases; drugs; enantiomers; enantioselectivity; models; pH; phylogeny;     Show all 9 Subjects
Abstract:
... Enantiopure β-amino acids are essential precursors of various pharmaceuticals, agrochemicals and other industrially important chemicals. In this study, we selected sixteen potential ω-Transaminases (ω-TAs) by BLAST and phylogenetic tree analysis. These ω-TAs were cloned, purified and tested for their reactivity for the synthesis of model β-amino acid (R)-3-amino-4-(2,4,5-triflurophenyl) butanoic a ...
DOI:
10.1016/j.enzmictec.2018.10.003

19. Combined effect of UVA radiation and agrochemicals on the durability of agricultural multilayer films

Author:
Briassoulis, Demetres; Hiskakis, Miltiadis; Tserotas, Philippos
Source:
Polymer degradation and stability 2018 v.154 pp. 261-275
ISSN:
0141-3910
Subject:
agrochemicals,   etc   ; durability; photolysis; strength (mechanics); ultraviolet radiation;     Show all 5 Subjects
Abstract:
... New generation agricultural films combine multilayer technologies, with the latest developments in chemicals resistant UV stabilisers and possibly the incorporation of barrier layers against agrochemicals. The photo-degradation behaviour of a series of experimental multilayer (ML) films exposed to accelerated ageing in combination with agrochemicals, was analysed. It has been shown that the presen ...
DOI:
10.1016/j.polymdegradstab.2018.06.012

20. Construction of a combined soil quality indicator to assess the effect of glyphosate application

Author:
Romano-Armada, Neli; Amoroso, María J.; Rajal, Verónica B.
Source:
The Science of the total environment 2019 v.682 pp. 639-649
ISSN:
0048-9697
Subject:
agrochemicals,   etc   ; Entisols; crops; glyphosate; herbicide resistance; microbial carbon; phosphorous acid; reduced tillage; soil degradation; soil quality; statistical analysis; Argentina;     Show all 12 Subjects
Abstract:
... Although the use of agrochemicals allowed increasing the crops productivity, in many cases led to soil deterioration. In this study, eight composite samples from different soils of two locations (San Martín and Anta) in Salta, Argentina, were collected and analyzed. All the samples were from loamy Entisols (0–20 cm depth) under reduced tillage without and with direct spray application of glyphosat ...
DOI:
10.1016/j.scitotenv.2019.05.079