Isoxazole- and isothiazole-5-carboxamide derivatives, their preparation and their use as herbicides
申请人:American Cyanamid Company
公开号:EP0761654A1
公开(公告)日:1997-03-12
There are provided isoxazole- and isothiazole-5-carboxamide compounds of formula I
wherein
X represents an oxygen or sulfur atom;
W represents an optionally substituted alkyl, alkenyl, cycloalkyl, diakylamino, aryl, heteroaryl or aralkyl group;
Y represents a hydrogen atom, a halogen atom, or an optionally substituted alkyl group;
R1 represents a hydrogen atom, an optionally substituted alkyl group, or an optionally substituted acyl group;
Z represents an optionally substituted C1-C4alkylene group with the proviso that when R1 is hydrogen and Z is methylene, then the optional substituent does not represent cyano, thiocarbamoyl or thiocarbamoyl-acyl; and
R2 represents an optionally substituted aryl or heteroaryl group with the proviso that when X represents a sulfur atom then R2 does not represent a furyl group or a phenyl group optionally substituted with halogen and with the further proviso that when Z represents an unsubstituted methylene group, then R2 does not represent an unsubstituted phenyl group; or the N-oxides thereof; or the optical isomers thereof.
There are further provided methods for the control of undesirable monocotyledenous and dicotyledenous plants species in the presence of a crop, such as a cereal crop or leguminous crop. Herbicidal compositions and methods of using same are also provided.
提供了式 I 的异噁唑和异噻唑-5-甲酰胺化合物
其中
X 代表氧原子或硫原子
W 代表任选取代的烷基、烯基、环烷基、二烷基氨基、芳基、杂芳基或芳烷基;
Y 代表氢原子、卤素原子或任选取代的烷基;
R1 代表氢原子、任选取代的烷基或任选取代的酰基;
Z 代表任选取代的 C1-C4 烯基,但当 R1 为氢原子而 Z 为亚甲基时,任选取代基不代表氰基、硫代氨基甲酰基或硫代氨基甲酰基;以及
R2 代表任选取代的芳基或杂芳基,但条件是当 X 代表硫原子时,R2 不代表任选被卤素取代的呋喃基或苯基,进一步的条件是当 Z 代表未取代的亚甲基时,R2 不代表未取代的苯基;或其 N-氧化物;或其光学异构体。
本发明还提供了在作物(如谷类作物或豆科作物)存在的情况下控制不受欢迎的单子叶和双子叶植物物种的方法。还提供了除草组合物及其使用方法。