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Substituted phenylurea derivative and selective herbicide containing the same

阅读:101发布:2020-10-21

专利汇可以提供Substituted phenylurea derivative and selective herbicide containing the same专利检索,专利查询,专利分析的服务。并且NEW MATERIAL:A compound of formulaI[X is H or Cl; Y is O or S; R
1 is lower alkyl or lower alkoxyl; R
2 is group of R
3 -CH=CH-CH-CH
2 -CH
2 -; group of formula III (R
3 and R
4 are H or lower alkyl; R
5 is lower alkyl); R
1 is not lower alkyl when Y is O].
EXAMPLE: N'-[3-Chloro-4-(butenylthio)phenyl]-N,N-dimethylurea.
USE: A selective herbicide, having a powerful weeding activity against many weeds by the inhibitory action on the photosynthesis with very low phytotoxicity to rice plants, and having a relatively long residual effect on barnyard grass before or after the development period W the period of the three leaves with low toxicity.
PROCESS: A substituted phenyl isocyanate derivative of formula III is reacted with N,N-dimethylamine or N,O-dimethylhydroxylamine to afford the compound of formulaI.
COPYRIGHT: (C)1982,JPO&Japio,下面是Substituted phenylurea derivative and selective herbicide containing the same专利的具体信息内容。

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