Sulfonamide derivative, process for preparing the same and herbicide using the same.

摘要

Disclosed are a sulfonamide compound represented by the following formula (I): <CHEM> wherein Y represents a lower akyl group, a lower alkenyl group, a lower alkynyl group, a halo-lower alkyl group, a cyano-lower alkyl group or -C(CH3)2(OR<1>) where R<1> represents a lower akyl group, a lower alkenyl group, a lower alkynyl group, a halo-lower alkyl group or a cyano-lower alkyl group; Q represents a substituted or unsubstituted pyridyl group or -NR<2>R<3> where R<2> represents a hydrogen atom, a lower alkyl group, a lower alkoxy group; and R<3> represents a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a phenyl group or a benzyl group; or R<2> and R<3> may be combined to form a cycloamino group; X represents an oxygen atom or a sulfur atom; and Z represents a nitrogen atom or -CH= group. processes for preparing the same and a herbicide containing the same as an active ingredient(s).