A herbicide which comprises a compound as an active ingredient having the formula ##STR1## wherein X represents --H or --Cl; Y represents halogen atom or cyano group; Z.sub.1 represents --H or methyl group; Z.sub.2 represents --H, methyl or ethyl group; Z.sub.3 represents cyano group or ##STR2## group; R represents hydroxy group, --O-- cation group, C.sub.1 - C.sub.4 alkylthio group, C.sub.2 - C.sub.4 alkenylthio group, C.sub.2 - C.sub.4 alkynylthio group, C.sub.1 - C.sub.4 alkoxy group, C.sub.1 - C.sub.4 alkoxy- C.sub.1 - C.sub.4 alkoxy group, C.sub.2 - C.sub.4 alkenyloxy group, C.sub.2 - C.sub.4 alkynyloxy group, amino group, C.sub.1 - C.sub.4 alkylamino group, di-C.sub.1 - C.sub.4 alkylamino group or anilino group which can be substituted with halogen atom or C.sub.1 - C.sub.4 alkyl group.
一种
除草剂,其包含一种具有以下结构式的化合物作为活性成分:其中X代表--H或--Cl;Y代表卤原子或
氰基;Z.sub.1代表--H或
甲基基团;Z.sub.2代表--H,
甲基或乙基基团;Z.sub.3代表
氰基或##
STR2##基团;R代表羟基,--O--阳离子基团,C.sub.1 - C.sub.4 烷基
硫基团,C.sub.2 - C.sub.4
烯基
硫基团,C.sub.2 - C.sub.4 炔基
硫基团,C.sub.1 - C.sub.4 烷
氧基团,C.sub.1 - C.sub.4 烷
氧- C.sub.1 - C.sub.4 烷
氧基团,C.sub.2 - C.sub.4
烯氧基团,C.sub.2 - C.sub.4 炔
氧基团,
氨基,C.sub.1 - C.sub.4 烷基
氨基团,双-C.sub.1 - C.sub.4 烷基
氨基团或
苯胺基团,其可以被卤原子或C.sub.1 - C.sub.4 烷基基团取代。