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1,2,3-thiadiazole derivative, production thereof and herbicide

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专利汇可以提供1,2,3-thiadiazole derivative, production thereof and herbicide专利检索,专利查询,专利分析的服务。并且NEW MATERIAL:A compound shown by formula I (R
1 to R
3 are H, lower alkyl, further R
1 is phenyl or heterocyclic group which may contain substituent group and R
3 is lower alkenyl; R
4 is alkyl, alkenyl, alkynyl, cycloalkyl, phenylalkyl, aryl or nitrogen-containing heterocyclic group which may contain substituent group in each case and NR
3 R
4 is saturated or unsaturated heterocyclic group which may contain hetero atom and arbitrarily substituted) X is O or S).
EXAMPLE: 2-(4-Phenyl-1,2,3-thiadiazol-5-yloxy)-N-methylacetanilide.
USE: A herbicide showing excellently herbicidal activity against monocytyledonous weeds and dicotyledonous weeds, having low phytotoxicity to useful plants and low toxicity to men and animals free from problems of residual toxicity.
PREPARATION: A compound of formula II is reacted with a compound of formula III or a compound of formula IV with a compounded of formula V (Hal is halogen) to give a compound shown by formula I.
COPYRIGHT: (C)1991,JPO&Japio,下面是1,2,3-thiadiazole derivative, production thereof and herbicide专利的具体信息内容。

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