1-(4-trifluoromethoxybenzene)-3-(2,6-difluorobenzoyl) urea preparation

Abstract

The invention relates to a pesticide, namely a 1-(4-trifluoromethoxybenzene)-3-(2,6-difluorobenzoyl) urea preparation in pest control of crops, fruit trees, vegetables, cotton and forests. The preparation comprises 0.1 to 50 percent of 1-(4-trifluoromethoxybenzene)-3-(2,6-difluorobenzoyl) urea raw powder, and can be prepared into a powder preparation, wettable powder, an emulsifiable solution andother preparations. Compared with registered similar products, such as chlorbenzuron, triflurnuron, hexaflumuron and chlorfluazuron, the preparation has improved insecticidal activity. The preparation can control cnaphalocrocis medinalis and chilo suppressalis, 1 gram of the preparation is used in each mu to maintain high pesticide effect for 1 month; the preparation can control plutella xylostella, cotton bollworm, prodenia litura, spodoptera exigua, maruca testulalis geyer and the like, and can maintain high pesticide effect for about 30 days; and the preparation can effectively kill elder pests with control effect of over 90 percent; and compared with conventional benzoylphenyl urea pesticides and chlorantraniliprole mono pesticides, the preparation kills pests more completely and has more durable effect.

Description

technical field [0001] The invention relates to a pesticide, that is, 1-(4-trifluoromethoxyphenyl)-3-(2,6-difluorobenzoyl) used in the control of crops, fruit trees, vegetables, cotton and forest pests Urea preparations. Background technique [0002] In the prior art, 1-(4-trifluoromethoxyphenyl)-3-(2,6-difluorobenzoyl)urea (English name: 2,6-Dicfluoro-N-(((4 -trifluoromethoxy)phenyl)-amino)carbonyl)benzamide) disclosed in U.S. Patent No. 4,089,975, structural formula: [0003] [0004] . Molecular formula: C 15 h 9 f 5 N 2 o 3 , Molecular weight: 360.24, trade name (named by the manufacturer or hereinafter): Tongzaurea. Produced and sold by Tonghua Pesticide Chemical Co., Ltd. This process adopts a one-step synthesis method, condensing 2,6-difluorobenzoyl chloride and trifluoromethoxyphenylurea, the tail gas is absorbed to obtain hydrochloric acid for sale, the reactant is filtered, and the solid part is dried to obtain 1-(4-tris Fluoromethoxyphenyl)-3-(2,6-dif...

AI Technical Summary

Problems solved by technology

Existing pesticides have high toxicity, strong drug resistance, large dosage per mu, high cost, short duration of action, no egg killing, no significant effect in egg stage and larval stage, poor efficacy, great environmental pollution, and harm to natural enemies

Long-term use of a pesticide will easily cause pests to develop resistance, increasing the amount of pesticides used year by year. While killing pests, it also kills natural enemies and increases the occurrence of pests

At the same time, it increases the cost of agricultural prevention and control, pollutes the environment, and causes a series of problems such as excessive pesticide residues.

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