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Hydrazone fungicide for agricultural and horticulatural use

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专利汇可以提供Hydrazone fungicide for agricultural and horticulatural use专利检索,专利查询,专利分析的服务。并且PURPOSE: A fungicide that contains a p-nitrophenylhydrazone derivative as an active principle, thus showing remarkable effect of controlling various kinds of blights and no injury to crops.
CONSTITUTION: For example, a hydrazone of formula I [R
1 is H, lower alkyl; R
2 is lower elkyl having substitutent (lower alkoxy, phenoxy, lower alkylthio, lower alkoxycarbonyl, carboxyl)] is used as an active principle to give the objective fungicide for agricultural and horticultural use. The fungicide shows remarkable effect on various kinds of blights, such as rice blast or Helminthosporium leaft spot. Further, it has wider antifungal spectrum and higher antifungal activity than the same kind of other preparations, but shows no injury to plants. The compound of formula I is obtained, e.g., by reaction of a compound of formula II with another compound of formula III under acidic conditions in an aqueous alcohol.
COPYRIGHT: (C)1981,JPO&Japio,下面是Hydrazone fungicide for agricultural and horticulatural use专利的具体信息内容。

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