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Herbicidal composition containing 3-aryl-6-trifluoromethylpyridazinol compound, and application thereof

A technology of trifluoromethylpyridazinol and herbicidal composition, which is applied in the field of pesticides and can solve the problems of expanding the herbicidal spectrum and reducing the amount of application

Active Publication Date: 2020-10-27
JIANGSU KINGAGROOT WEED MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composition can effectively prevent and control weeds such as quinoa, green foxtail, bogagrass, wild oats, retroverted amaranth, barnyardgrass, etc. Sexual weeds and other characteristics

Method used

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  • Herbicidal composition containing 3-aryl-6-trifluoromethylpyridazinol compound, and application thereof
  • Herbicidal composition containing 3-aryl-6-trifluoromethylpyridazinol compound, and application thereof
  • Herbicidal composition containing 3-aryl-6-trifluoromethylpyridazinol compound, and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0558] (1) Preparation of intermediates

[0559]

[0560] (1.1) Dissolve compound C-1 in dioxane solution, add sodium methoxide solution (30% content, 1.5eq) and raise the temperature to 100 degrees to react for 16-18 hours, and monitor the completion of the reaction through liquid phase. Cool the reaction solution to room temperature, remove the solvent with concentrated acid, dissolve it with 1M hydrochloric acid solution, extract with ethyl acetate until the aqueous phase has no product, concentrate the organic phase to obtain a solid, petroleum ether: ethyl acetate = 10:1, beat and purify , and filtered to obtain product C-2.

[0561] (1.2) Dissolve compound C-2 in DCE, add phosphorus oxychloride (3eq) and DMF (2%), and react at 100°C for 16-18 hours. Liquid phase monitoring After the reaction is completed, the reaction solution is cooled and concentrated, and the obtained product is added to water under temperature control. A large amount of solids will precipitate ou...

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Abstract

The invention belongs to the field of pesticides, and particularly relates to a weeding composition containing a 3-aryl-6-trifluoromethylpyridazinol compound, and application of the weeding composition. The weeding composition comprises an effective weeding amount of an active component A and an effective weeding amount of an effective component B, wherein the active component A is selected from one or more than two of compounds represented by a general formula I, X represents an unsubstituted or substituted aryl group, and preferably A is an active component B selected from one or more of thefollowing compounds and salts / esters thereof: an HPPD inhibitor, a PDS inhibitor, a DOXP inhibitor, an ALS inhibitor, an ACCase inhibitor, a PPO inhibitor, a PSII inhibitor, a microtubule assembly inhibitor and the like. The composition can be used for effectively preventing and killing weeds such as chenopodium album l, green setaria viridis, lamium amplexicaule l, wild oats, amaranthus retroflexus, barnyard grass and the like in crop fields, and has the characteristics of expanding the weed control spectrum, reducing the application amount, generating a synergistic effect, solving resistantweeds and the like.

Description

[0001] This application is a divisional application of a Chinese invention patent application with an application date of April 22, 2019, an application number of 201910323603.8, and an invention title of "Herbicidal Composition Containing Trifluoromethylpyridazinol Compounds and Its Application". technical field [0002] The invention belongs to the field of pesticides, and in particular relates to a herbicidal composition containing 3-aryl-6-trifluoromethylpyridazinol compounds and an application thereof. Background technique [0003] Chemical herbicide is the most economical and effective means of controlling weeds in farmland, but long-term continuous high-dose use of a single species or single mode of action of chemical herbicides is likely to cause problems such as weed resistance and resistance evolution. Reasonable compounding or mixing of herbicide compounds has the advantages of expanding the spectrum of weeds, improving the control effect, delaying the occurrence a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/58A01N41/10A01N43/80A01N43/08A01N43/56A01N43/90A01N43/36A01N43/40A01N39/04A01N47/36A01N43/50A01N43/54A01N35/10A01N43/60A01N43/70A01N43/707A01N47/30A01P13/00
CPCA01N43/58A01N41/10A01N43/80A01N43/08A01N43/56A01N43/90A01N43/36A01N43/40A01N39/04A01N47/36A01N43/50A01N43/54A01N35/10A01N43/60A01N43/70A01N43/707A01N47/30
Inventor 彭学岗赵德刘娜张景远金涛
Owner JIANGSU KINGAGROOT WEED MANAGEMENT CO LTD
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