申请人:Kureha Kagaku Kogyo Kabushiki Kaishi
公开号:US04968345A1
公开(公告)日:1990-11-06
Disclosed herein is a phenylhydrazone derivative of oxamide represented by the formula (I): ##STR1## wherein R.sup.1 is straight-chain alkyl group having 2 to 10 carbon atoms, branched alkyl group or cyclic alkyl group having 3 to 10 carbon atoms, alkyl group having 1 to 3 carbon atoms which is substituted with an alicyclic structure having 3 to 7 carbon atoms, phenyl group, halogen-substituted phenyl group, aralkyl group having 7 to 9 carbon atoms, alkenyl group having 3 to 6 carbon atoms, alkyl group having 2 to 4 carbon atoms which is substituted with alkoxy group having 1 to 4 carbon atoms, or alkyl group having 2 to 10 carbon atoms which is substituted with 1 to 19 fluorine atoms; and R.sup.2 is hydrogen, fluorine, chlorine, methyl group or methoxy group, and a herbicidal composition containing the derivative as active ingredient. The phenylhydrazone derivative of oxamide represented by the formula (I) of the present invention shows a high herbicidal activity and also have an excellent selectivity allowing killing of weeds alone without doing any practical harm to the crops such as rice, wheat and corn.
本文揭示了一种由式(I)表示的草胺酰肼衍生物,其中R.sup.1是直链烷基基团,具有2到10个碳原子,支链烷基基团或具有3到10个碳原子的环烷基基团,具有1到3个碳原子的烷基基团,其被具有3到7个碳原子的脂环结构取代,苯基,卤代苯基,具有7到9个碳原子的芳基基团,具有3到6个碳原子的烯基基团,具有2到4个碳原子的烷基基团,其被具有1到4个碳原子的烷氧基团取代,或具有2到10个碳原子的烷基基团,其被1到19个氟原子取代;R.sup.2是氢,氟,氯,甲基基团或甲氧基基团,以及含有该衍生物作为活性成分的除草剂组合物。本发明的式(I)表示的草胺酰肼衍生物表现出高除草活性,并且具有优异的选择性,可以仅杀死杂草,而对水稻、小麦和玉米等作物几乎没有实际危害。