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1. Smartphone image-based framework for quick, non-invasive measurement of spray characteristics

Author:
Vinicius dos Santos Carreira; David Nuyttens; Jan Langenakens; João Victor Pereira; Rouverson Pereira da Silva
Source:
Smart agricultural technology 2023 v.3 pp. 100120
ISSN:
2772-3755
Subject:
agrochemicals,   etc   ; mobile telephones; technology;     Show all 3 Subjects
Abstract:
... Agricultural spray nozzles are small yet key components for delivering agrochemicals to the target surface. Their complexity demands specific assessment to guarantee the spray quality. The traditional equipment measures spray characteristics accurately; however, it can be time-consuming and invasive. An emerging method for agricultural assessments is image processing. Therefore, our goal was to de ...
DOI:
10.1016/j.atech.2022.100120

2. Citrate-promoted dissolution of nanostructured manganese oxides: Implications for nano-enabled sustainable agriculture

Author:
Di Fu; Lin Duan; Xiaoyan Li; Chuanjia Jiang; Tong Zhang; Wei Chen
Source:
Journal of environmental sciences (China) 2023 v.125 pp. 492-498
ISSN:
1001-0742
Subject:
agrochemicals,   etc   ; manganese; nanospheres; nanowires; sustainable agriculture; China;     Show all 6 Subjects
Abstract:
... Nanostructured manganese oxides (nano-MnOₓ) have shown great promises as versatile agrochemicals in nano-enabled sustainable agriculture, owing to the coupled benefits of controlled release of dissolved Mn²⁺, an essential nutrient needed by plants, and oxidative destruction of environmental organic pollutants. Here, we show that three δ-MnO₂ nanomaterials consisting of nanosheet-assembled flower-l ...
DOI:
10.1016/j.jes.2022.03.009

3. Field evaluation of a deep learning-based smart variable-rate sprayer for targeted application of agrochemicals

Author:
Aitazaz A. Farooque; Nazar Hussain; Arnold W. Schumann; Farhat Abbas; Hassan Afzaal; Andrew McKenzie-Gopsill; Travis Esau; Qamar Zaman; Xander Wang
Source:
Smart agricultural technology 2023 v.3 pp. 100073
ISSN:
2772-3755
Subject:
agrochemicals,   etc   ; Alternaria solani; Chenopodium album; Solanum tuberosum; Spergula arvensis; blight; corn; environmental stewardship; farms; liquids; plant protection; potatoes; spray volume; sprayers; weeds;     Show all 15 Subjects
Abstract:
... The field performance of a newly developed novel smart variable-rate sprayer was evaluated. The sprayer uses convolutional neural networks (CNNs) for target detection and spot-applications of agrochemicals within potato (Solanum tuberosum L.) fields attacked by lamb's quarters (Chenopodium album L.) and corn spurry (Spergula arvensis L.) weeds and the early blight potato disease caused by Alternar ...
DOI:
10.1016/j.atech.2022.100073

4. Photoredox Polyfluoroarylation of Alkyl Halides via Halogen Atom Transfer

Author:
Ben Niu; Krishnakumar Sachidanandan; Bryan G. Blackburn; Maria Victoria Cooke; Sébastien Laulhé
Source:
Organic letters 2022 v.24 no.3 pp. 916-920
ISSN:
1523-7052
Subject:
agrochemicals,   etc   ; halogens; redox reactions;     Show all 3 Subjects
Abstract:
... Polyfluoroarene moieties are of interest in medicinal chemistry, agrochemicals, and material sciences. Herein, we present the first polyfluoroarylation of unactivated alkyl halides via a halogen atom transfer process. This method converts primary, secondary, and tertiary alkyl halides into the respective polyfluoroaryl compounds in good yields in the presence of amide, carbamate, ester, aromatic, ...
DOI:
10.1021/acs.orglett.1c04267

5. Synthesis of gem-Difluorinated 1,3-Dienes via Synergistic Cu/Pd-Catalyzed Borodifluorovinylation of Alkynes

Author:
Wen-Yan Xu; Yu-Jie Li; Tian-Jun Gong; Yao Fu
Source:
Organic letters 2022 v.24 no.32 pp. 5884-5889
ISSN:
1523-7052
Subject:
agrochemicals,   etc   ; alkynes; drugs; feedstocks;     Show all 4 Subjects
Abstract:
... gem-Difluoroalkenes (=CF₂), which normally act as metabolically stable bioisosteres for carbonyl groups (C═O), are widely applied in agrochemicals and pharmaceuticals and are also used as building blocks in organic synthesis. Herein, an example of Cu/Pd-catalyzed borodifluorovinylation was achieved using alkynes, difluoroethylene bromide, and B₂pin₂ as chemical feedstocks, providing the correspond ...
DOI:
10.1021/acs.orglett.2c01875

6. Debates on the construction of an alternative food system in periurban spaces. The experience of a national consultation table in Argentina

Author:
Clara Craviotti
Source:
Journal of rural studies 2022 v.94 pp. 399-407
ISSN:
0743-0167
Subject:
agrochemicals,   etc   ; models; vision; Argentina;     Show all 4 Subjects
Abstract:
... This contribution analyses a consultation table instituted in Argentina at the national level, in which actors from different levels of government and areas of concern participated, along with technicians and researchers specialized in the problems of periurban areas affected by the use of agrochemicals linked to an intensive model of agricultural production. It examines the main points in common ...
DOI:
10.1016/j.jrurstud.2022.07.003

7. Atlas of the microbial degradation of fluorinated pesticides

Author:
Diogo A. M. Alexandrino; Ana P. Mucha; C. Marisa R. Almeida; Maria F. Carvalho
Source:
Critical reviews in biotechnology 2022 v.42 no.7 pp. 991-1009
ISSN:
1549-7801
Subject:
agrochemicals,   etc   ; biodegradation; biotechnology; metabolism; pesticides;     Show all 5 Subjects
Abstract:
... Fluorine-based agrochemicals have been benchmarked as the golden standard in pesticide development, prompting their widespread use in agriculture. As a result, fluorinated pesticides can now be found in the environment, entailing serious ecological implications due to their harmfulness and persistence. Microbial degradation might be an option to mitigate these impacts, though environmental microor ...
DOI:
10.1080/07388551.2021.1977234

8. Copper-catalyzed radical trifluoroethylthiolation of arylboronic acids with PhSO2SCH2CF3

Author:
Lefeng Dong; Junqing Liang; Ruijia Chen; Xiaoyong Xu; Xusheng Shao; Zhong Li
Source:
Tetrahedron letters 2022 v.92 pp. 153293
ISSN:
0040-4039
Subject:
agrochemicals,   etc   ; ambient temperature; clofibrate; moieties;     Show all 4 Subjects
Abstract:
... Trifluoroethylthio group (SCH₂CF₃) is a key functionality in several pharmaceutical and agrochemical compounds, the methods for the installation of the 2,2,2-trifluoroethylthio group are sought after. Herein, we report a copper-catalyzed trifluoroethylthiolation reaction of S-(2,2,2-trifluoroethyl) benzenesulfonothioates and phenylboronic acids at room temperature. The reaction achieved the insert ...
DOI:
10.1016/j.tetlet.2021.153293

9. Electrochemical Benzylic C(sp³)–H Acyloxylation

Author:
Alexander P. Atkins; Albert C. Rowett; David M. Heard; Joseph A. Tate; Alastair J. J. Lennox
Source:
Organic letters 2022 v.24 no.28 pp. 5105-5108
ISSN:
1523-7052
Subject:
agrochemicals,   etc   ; Lewis bases; electrochemistry; oxidation;     Show all 4 Subjects
Abstract:
... The development of sustainable C(sp³)–H functionalization methods is of great interest to the pharmaceutical and agrochemical industries. Anodic oxidation is an efficient means of producing benzylic cations that can undergo subsequent in situ nucleophilic attack to afford functionalized benzylic products. Herein, we demonstrate the suitability of carboxylic acids as nucleophiles to yield benzylic ...
DOI:
10.1021/acs.orglett.2c01930

10. Metal–Organic Frameworks in Agriculture

Author:
Sara Rojas; Antonio Rodríguez-Diéguez; Patricia Horcajada
Source:
ACS applied materials & interfaces 2022 v.14 no.15 pp. 16983-17007
ISSN:
1944-8252
Subject:
agrochemicals,   etc   ; bioaccumulation; pest resistance; remediation; soil;     Show all 5 Subjects
Abstract:
... Agrochemicals, which are crucial to meet the world food qualitative and quantitative demand, are compounds used to kill pests (insects, fungi, rodents, or unwanted plants). Regrettably, there are some important issues associated with their widespread and extensive use (e.g., contamination, bioaccumulation, and development of pest resistance); thus, a reduced and more controlled use of agrochemical ...
DOI:
10.1021/acsami.2c00615

11. Cobalt-Catalyzed Enantioselective C–H Arylation of Indoles

Author:
Nicolas Jacob; Yassir Zaid; João C. A. Oliveira; Lutz Ackermann; Joanna Wencel-Delord
Source:
Journal of the American Chemical Society 2022 v.144 no.2 pp. 798-806
ISSN:
1520-5126
Subject:
agrochemicals,   etc   ; arylation; carbenes; enantioselectivity; indoles; ligands;     Show all 6 Subjects
Abstract:
... Atropoisomeric (hetero)biaryls are scaffolds with increasing importance in the pharmaceutical and agrochemical industries. Although it is the most obvious disconnection to construct such compounds, the direct enantioselective C–H arylation through the concomitant induction of the chiral information remains extremely challenging and uncommon. Herein, the unprecedented earth-abundant 3d-metal-cataly ...
DOI:
10.1021/jacs.1c09889

12. Impact of natural products on discovery of, and innovation in, crop protection compounds

Author:
Thomas C Sparks; Robert J Bryant
Source:
Pest management science 2022 v.78 no.2 pp. 399-408
ISSN:
1526-498X
Subject:
agrochemicals,   etc   ; data collection; models; plant protection;     Show all 4 Subjects
Abstract:
... Natural products (NPs) have long been an important source of, and inspiration for, developing novel compounds to control weeds, pathogens and insect pests. In this review, we use a dataset of 800 historic, current and emerging crop protection compounds to explore the influence of NPs on the introduction of new crop protection compounds (fungicides, herbicides, insecticides) as a function of time. ...
DOI:
10.1002/ps.6653

13. Stereoselective synthesis of δ-fluorinated isoleucines exploiting consecutive C(sp3)-H bond activations

Author:
Matteo Borgini; Peter Wipf
Source:
Tetrahedron 2022 v.120 pp. 132876
ISSN:
0040-4020
Subject:
agrochemicals,   etc   ; alanine; materials science; oxidation; stereoselective synthesis;     Show all 5 Subjects
Abstract:
... Fluorinated α-amino acids are important building blocks for pharmaceutical and agrochemical industries, as well as in protein NMR and material science. We optimized a synthetic route to generate 5-fluoro-l-isoleucine (1) and 5,5-difluoro-l-isoleucine (2) from l-alanine by leveraging two consecutive C(sp3)-H bond functionalization reactions and developed a new oxidation protocol to facilitate direc ...
DOI:
10.1016/j.tet.2022.132876

14. Studies on biological aspects of complexes of transition metal (copper) with active sulphur donor ligand-thiazole

Author:
Moni Verma; Mukti Verma; Pramod Kumar
Source:
Progressive agriculture 2022 v.22 no.1 pp. 89-93
ISSN:
0976-4615
Subject:
agrochemicals,   etc   ; agriculture; antioxidants; nitrogen; penicillins; sulfur; thiazoles;     Show all 7 Subjects
Abstract:
... Thiazoles belong to the group of azole heterocycles. They are aromatic five-membered heterocycles containing one sulfur and one nitrogen atom. In recent years thiazoles, their derivatives, and isomers have gained considerable attention because of their broad applications in different fields, such as agrochemicals, industrial, and photographic sensitizers. Also, they have pharmaceutical and biologi ...
DOI:
10.5958/0976-4615.2022.00016.3

15. The power of cross‐indication testing: agrochemicals originally stemming from a different indication

Author:
Clemens Lamberth
Source:
Pest management science 2022 v.78 no.11 pp. 4438-4445
ISSN:
1526-498X
Subject:
agrochemicals,   etc   ; chemistry; fungicides; herbicides; insecticides; plant protection;     Show all 6 Subjects
Abstract:
... Cross‐indication testing is the assaying of final compounds, but also their intermediates or side products, from one agrochemical indication against target species of other product lines. This approach has proven to be a highly successful source of lead compounds, which led to several important crop protection products. This review article describes, which herbicides came from fungicides and insec ...
DOI:
10.1002/ps.7100

16. Applications of Isosteres of Piperazine in the Design of Biologically Active Compounds: Part 1

Author:
Nicholas A. Meanwell; Olivier Loiseleur
Source:
Journal of agricultural and food chemistry 2022 v.70 no.36 pp. 10942-10971
ISSN:
1520-5118
Subject:
agrochemicals,   etc   ; drug design; drugs; food chemistry; piperazine; solubility;     Show all 6 Subjects
Abstract:
... Piperazine and homopiperazine are well-studied heterocycles in drug design that have found gainful application as scaffolds and terminal elements and for enhancing the aqueous solubility of a molecule. The optimization of drug candidates that incorporate these heterocycles in an effort to refine potency, selectivity, and developability properties has stimulated the design and evaluation of a wide ...
DOI:
10.1021/acs.jafc.2c00726

17. ¹⁹F-centred NMR analysis of mono-fluorinated compounds

Author:
Alan J. R. Smith; Richard York; Dušan Uhrín; Nicholle G. A. Bell
Source:
RSC advances 2022 v.12 no.16 pp. 10062-10070
ISSN:
2046-2069
Subject:
agrochemicals,   etc   ; biodegradation; biotransformation; drugs; information sources; pharmacokinetics; radio;     Show all 7 Subjects
Abstract:
... Addressing limitations of the existing NMR techniques for the structure determination of mono-fluorinated compounds, we have developed methodology that uses ¹⁹F as the focal point of this process. The proposed ¹⁹F-centred NMR analysis consists of a complementary set of broadband, phase-sensitive NMR experiments that utilise the substantial sensitivity of ¹⁹F and its far reaching couplings with ¹H ...
DOI:
10.1039/d1ra08046f

18. A Competitive Edge: Competitor Inspired Scaffold Hopping in Herbicide Lead Optimization

Author:
David M. Barber
Source:
Journal of agricultural and food chemistry 2022 v.70 no.36 pp. 11075-11090
ISSN:
1520-5118
Subject:
agrochemicals,   etc   ; chemical structure; food chemistry; herbicides; plant protection; toxicity;     Show all 6 Subjects
Abstract:
... Over the years, scaffold hopping has proven to be a powerful tool in the agrochemical optimization process. It offers the opportunity to modify known molecular lead structures to improve a range of parameters, including biological efficacy and spectrum, physicochemical properties, toxicity, stability, and to secure new intellectual property. Very often the disclosure of a new chemical structure ca ...
DOI:
10.1021/acs.jafc.1c07910

19. Application of Molecular-Modeling, Scaffold-Hopping, and Bioisosteric Approaches to the Discovery of New Heterocyclic Picolinamides

Author:
Victoria Jackson; Linda Jordan; Ryan N. Burgin; Oliver J. S. McGaw; Calum W. Muir; Victor Ceban
Source:
Journal of agricultural and food chemistry 2022 v.70 no.36 pp. 11031-11041
ISSN:
1520-5118
Subject:
agrochemicals,   etc   ; antifungal properties; food chemistry; heterocyclic compounds; plant protection;     Show all 5 Subjects
Abstract:
... Macrocyclic natural products and their derivatives are a valuable source for biologically active crop protection products and have had significant impact on the development of conventional agrochemicals. However, they can be challenging starting points for lead-generation efforts because of their size, structural complexity, and developability. Using molecular modeling and electrostatic analysis, ...
DOI:
10.1021/acs.jafc.2c03755

20. Revisiting pesticide pollution: The case of fluorinated pesticides

Author:
Diogo A.M. Alexandrino; C. Marisa R. Almeida; Ana P. Mucha; Maria F. Carvalho
Source:
Environmental pollution 2022 v.292 pp. 118315
ISSN:
0269-7491
Subject:
agrochemicals,   etc   ; environmental fate; fluorine; market share; pesticides; pollution; toxicity;     Show all 7 Subjects
Abstract:
... Fluorinated pesticides acquired a significant market share in the agrochemical sector due to the surge of new fluoroorganic ingredients approved in the last two decades. This growing trend has not been accompanied by a comprehensive scientific and regulatory framework entailing all their potential negative impacts for the environment, especially when considering the hazardous properties that may r ...
DOI:
10.1016/j.envpol.2021.118315