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Pyrazolesulfonylurea derivative, preparation thereof and herbicide

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专利汇可以提供Pyrazolesulfonylurea derivative, preparation thereof and herbicide专利检索,专利查询,专利分析的服务。并且NEW MATERIAL:A compound expressed by formula I (R
1 is alkenyl, alkynyl, alkoxyalkyl, etc.; R
2 is lower alkyl, alkenyl, alkynyl or haloalkyl, etc.; X and Y each are independently H, lower alkyl, lower alkoxyl or halogen; Z is N or a group -CH=).
EXAMPLE: N-[ 4,6-Dimethoxypyrimidin-2-yl )aminocarbonyl ]-4-ethoxycarbonyl-1- methoxymethylpyazole-5-sulfonamide.
USE: A selective herbicide, having high herbicidal activity in a much smaller amount of chemical than the well-known compound, and capable of exhibiting effect even in orchards and noncultivated land.
PREPARATION: A pyrazolesulfonyl isocyanate derivative expressed by formula IIis dissolved in a fully dried inert solvent, e.g. dioxane, and pyrimidine or a trazine derivative expressed by formula III is added thereto and stirred to give the aimed compound expressed by formula I.
COPYRIGHT: (C)1985,JPO&Japio,下面是Pyrazolesulfonylurea derivative, preparation thereof and herbicide专利的具体信息内容。

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