Pyrimidine or triazine derivative, process for preparing the same and herbicide using the same.

摘要

Disclosed are a pyrimidine or triazine compound represented by the following formula (I): <CHEM> wherein R<1> represents cyano group, a halogen atom, hydroxy group or -O-R<7> where R<7> represents a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a halo-lower alkyl group or a cyano-lower alkyl group; R<2> represents hydrogen atom or a lower alkyl group; R<3> represents hydrogen atom or a lower alkyl group; R<4> represents a 1-imidazolyl group, -NHSO2-R<8> where R<8> represents a lower alkyl group or a phenyl group which may have a substituent, hydroxy group, a lower alkoxy group or a benzyloxy group when Z is nitrogen atom; or a 1-imidazolyl group, -NHSO2-R<8> where R<8> has the same meaning as defined above, hydroxy group, OK, a lower alkoxy group which may have a substituent, a lower alkenyloxy group, a lower alkynyloxy group, a cycloalkoxy group which may have a substituent, a phenoxy group, a benzyloxy group, a lower alkylthio group, a phenylthio group or an alkylsulfinylamino group when Z is -CH= group; R<5> represents a lower alkoxy group; R<6> represents a lower alkoxy group or a lower alkyl group; X represents oxygen atom or sulfur atom; and Z represents nitrogen atom or -CH= group. processes for preparing the same and a herbicide containing the same as an active ingredient(s).