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Pyrazolone derivative, its preparation, and destroying agent for noxious living creature comprising it

阅读:833发布:2023-01-26

专利汇可以提供Pyrazolone derivative, its preparation, and destroying agent for noxious living creature comprising it专利检索,专利查询,专利分析的服务。并且NEW MATERIAL:A pyrazolone derivative shown by the formula I (n is positive integer).
EXAMPLE: 1-(2,4-Dichlorophenyl)-3-amino-5-pyrazolone.
USE: An agricultural and industrial destroying agnet for noxious living creatures. Chemically safe, and it causes no corrosion of metals. For agicultural use, it can be used as a fungicide, insecticide, acaricide, nematocide, herbicide, etc., and for industrial use, it can prevent contamination or breakdwon caused by bacterial, fungi, etc. occurring on a film. It can also prevent contamination caused by slime, algae, etc. occurring in industrial water, cooling water etc.
PROCESS: Preferably in a reactor having a reflux condenser, a hydrazine shown by the formula II, e.g., 2,4-dichlorophenylhydrazine, etc. is reacted with ethyl cyanoactate in an organic solvent, e.g., anhydrous ethanol, etc. in the presence of an alcoeholate, e.g., sodium ethylate, etc. for 2W20hr to give a pyrazolone derivative shown by the formula I.
COPYRIGHT: (C)1981,JPO&Japio,下面是Pyrazolone derivative, its preparation, and destroying agent for noxious living creature comprising it专利的具体信息内容。

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