Indazolesulfonylurea derivative, its use and intermediate for its production

摘要

The present invention provides an indazolesulfonylurea derivative represented by the general formula: <IMAGE> <IMAGE> [wherein R1 is a hydrogen atom or an alkyl group, etc., R2 and R3 are the same or different and represent a hydrogen atom, a halogen atom, an alkyl group, the formula -COR4 (wherein R4 represents an alkoxy group, etc.), an alkoxy group, a haloalkoxy group or a cyano group, etc., X is an oxygen atom or a sulfur atom, Y is a hydrogen atom or an alkyl group, etc., A and B are the same or different and represent a halogen atom, an alkoxy group or an alkyl group, etc., and Z represents a nitrogen atom or a methine group], as well as a herbicide containing it as an active ingredient and an intermediate for its production. The compound of the present invention exhibits excellent herbicidal effects over a wide range from the preemergence stage to the growing stage of various weeds which are problematic in agricultural fields. Further, it is capable of controlling weeds germinating in paddy fields.