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Oxime Derivatives and Their Applications in Agriculture

A technology of pesticides and compounds, applied in the direction of application, chemicals for biological control, biocides, etc., can solve the problem of reduced control effect

Active Publication Date: 2020-08-14
DONGGUAN HEC PESTICIDES R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the long-term and frequent use of pesticides in agriculture, the diseases on crops have developed resistance to them, which has significantly reduced the control effect of existing pesticides. In order to solve this problem, it is necessary to continuously develop new compounds with plant disease control activity

Method used

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  • Oxime Derivatives and Their Applications in Agriculture
  • Oxime Derivatives and Their Applications in Agriculture
  • Oxime Derivatives and Their Applications in Agriculture

Examples

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Embodiment 1

[0221] Example 1: (Z)-tert-butyl(6-(((((1-(4-fluorobenzyl)-1H-tetrazol-5-yl)(phenyl)methylene)amino)oxy )Methyl)pyridin-2-yl) carbamate synthesis

[0222]

[0223] Step 1: Synthesis of 1-(azidomethyl)-4-fluorophenyl

[0224] Add 4-fluorobenzyl bromide (3.00g, 15.87mmol) and sodium azide (1.55g, 23.81mmol) into a 100mL round bottom flask, then add N,N-dimethylformamide (50mL) at 60℃ React for 8 hours. Add ethyl acetate (50 mL), wash with saturated brine (50 mL x 3), dry with anhydrous sodium sulfate, filter, and concentrate the filtrate under reduced pressure to obtain 2.21 g of a pale yellow oily liquid, yield: 92%.

[0225] Step 2: Synthesis of (Z)-(1-(4-fluorobenzyl)-1H-tetrazol-5-yl)(phenyl)methanone oxime

[0226] Add 1-(azidomethyl)-4-fluorophenyl (1.00g, 6.62mmol) and benzoyl nitrile (1.50g, 10.38mmol) into a 120mL sealed tube, and react at 120℃ for 8 hours to obtain the intermediate (1-(4-fluorobenzyl)-1H-tetrazol-5-yl)(phenyl)methanone, hydroxylamine hydrochloride (1.75g, 2...

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Abstract

The invention provides fungicide oxime derivatives. In particular, the invention relates to the oxime derivatives, a preparation thereof, an application of the oxime derivatives as fungicides, forms of fungicidal compositions of the oxime derivatives, and a method for controlling phytopathogenic fungi by using the compounds or compositions.

Description

Technical field [0001] The present invention relates to novel oxime derivatives and pesticides containing them as effective ingredients, especially plant disease control agents. Background technique [0002] Nowadays, due to the long-term and frequent use of pesticides in agriculture, the diseases on crops have developed resistance to them, which significantly reduces the prevention and control effects of existing pesticides. In order to solve this problem, it is necessary to continuously develop new compounds with the activity of preventing and controlling plant diseases. Summary of the invention [0003] The present invention provides a new class of oxime derivatives and compositions containing such derivatives. The oxime derivatives and the compositions are used to control phytopathogenic fungi. [0004] specifically: [0005] In one aspect, the present invention provides compounds represented by formula (I) or salts, N-oxides, (E) or (Z) isomers and mixtures of compounds represen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D401/12A01N47/18A01P3/00
CPCA01N47/18C07D401/12
Inventor 李义涛林健熊力李艳芳卢辉田宇
Owner DONGGUAN HEC PESTICIDES R&D CO LTD