Weeding composition containing trifluoromethyl pyridazinol compound, and application of weeding composition

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

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, bogai grass, wild oats, mud mustard, goosegrass, wild geranium, wheatgrass, wild millet, amaranth, barnyardgrass, etc. in crop fields, It has the characteristics of expanding the herbicidal spectrum, reducing the amount of application, being able to produce synergistic effects and solving resistant weeds, etc.

Method used

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  • Weeding composition containing trifluoromethyl pyridazinol compound, and application of weeding composition
  • Weeding composition containing trifluoromethyl pyridazinol compound, and application of weeding composition
  • Weeding composition containing trifluoromethyl pyridazinol compound, and application of weeding composition

Examples

Experimental program
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Effect test

preparation example Construction

[1031] (1) Preparation of intermediates

[1032]

[1033] (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.

[1034] (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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PUM

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Abstract

The invention belongs to the field of pesticides, and particularly relates to a weeding composition containing a trifluoromethyl pyridazinol 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 unsubstituted or substituted aryl and heteroaryl, and the active component B is selected from one or more of the following 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 removing weeds such as chenopodium album l, green setaria viridis, lamium amplexicaule l, wild oats, hemistepta lyrata bunge, eleusine indica, geranium wilfordii, lithospermum arvense, broomcorn millet, amaranthus retroflexus, barnyard grass and the like in crop fields, and has the characteristics of expanding a weed control spectrum, reducing application amount, generating synergism, solving resistant weeds and the like.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a herbicidal composition containing trifluoromethylpyridazinol compounds and applications thereof. Background technique [0002] 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 and development of weed resistance and drug resistance, and is one of the most effective methods to solve the above problems. For example, the patent CN1543455A describes a herbicidal composition containing 3-phenoxy-4-pyridazinol derivatives, but it still needs to be developed in production with high safety, w...

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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