申请人:Sankyo Company Limited
公开号:US04146726A1
公开(公告)日:1979-03-27
Herbicidal compositions containing as an active ingredient one or more of the pyrazole compounds having the formula ##STR1## (wherein R.sub.1 represents hydrogen atom or a lower alkyl group, R.sub.2 represents a lower alkyl group or a lower alkenyl group, X represents a halogen atom, nitro group, a lower alkyl group, a halogenated lower alkyl group, a lower alkoxy group, a lower alkanesulfonyl group, cyano group, a lower alkylthio group or an aliphatic acyl group and n is an integer of 1 to 4 and when n is 2, 3 or 4, X's may be the same or different), salts thereof and organic acid esters thereof, as well as new pyrazole compounds having herbicidal activities and the formula ##STR2## (wherein R.sub.1 represents hydrogen atom or a lower alkyl group, R.sub.2 represents a lower alkyl group or a lower alkenyl group Z represents a halogen atom, nitro group, a lower alkyl group, a halogenated lower alkyl group, a lower alkoxy group, a lower alkanesulfonyl group, cyano group, a lower alkylthio group, an aliphatic acyl group or benzoyl group, n is an integer of 1 to 4, when n is 2, 3 or 4, Z's may be the same or different and Y represents oxygen atom or sulfur atom); provided that those wherein R.sub.1 and R.sub.2 are methyl groups, Z is chlorine atom at 2-position, n is 1 and Y is oxygen atom and wherein R.sub.1 and R.sub.2 are methyl groups, Z is nitro group at 4-position, n is 1 and Y is oxygen atom are excluded. These pyrazole compounds are prepared in a conventional manner.
含有一种或多种具有以下式子的吡唑化合物作为活性成分的除草剂组合物:##STR1##(其中R.sub.1代表氢原子或较低的烷基,R.sub.2代表较低的烷基或较低的烯基,X代表卤素原子,硝基,较低的烷基,卤代较低的烷基,较低的烷氧基,较低的烷基磺酰基,氰基,较低的烷硫基或脂肪族酰基,n为1到4的整数,当n为2,3或4时,X可以相同或不同),其盐和有机酸酯,以及具有除草活性和以下式子的新的吡唑化合物:##STR2##(其中R.sub.1代表氢原子或较低的烷基,R.sub.2代表较低的烷基或较低的烯基,Z代表卤素原子,硝基,较低的烷基,卤代较低的烷基,较低的烷氧基,较低的烷基磺酰基,氰基,较低的烷硫基,脂肪族酰基或苯甲酰基,n为1到4的整数,当n为2,3或4时,Z可以相同或不同,Y代表氧原子或硫原子);但其中R.sub.1和R.sub.2为甲基基团,Z在2位为氯原子,n为1,Y为氧原子以及R.sub.1和R.sub.2为甲基基团,Z在4位为硝基,n为1,Y为氧原子的化合物除外。这些吡唑化合物以常规方式制备。