Herbicidal 4,5-dihydro-1H-1,2,4-triazole-3-carboxamide derivatives.

摘要

Herbicidal 4,5-dihydro-1H-1,2,4-triazole-3-carboxamide derivatives are represented by the formula (I): <CHEM> wherein R<1> represents a hydrogen atom, a halogen atom, an alkyl group of from 1 to 3 carbon atoms or an alkoxy group of from 1 to 3 carbon atoms; R<2> represents a hydrogen atom or a halogen atom; and R represents a straight-chain alkyl group of from 1 to 8 carbon atoms, a branched-chain alkyl group of from 3 to 8 carbon atoms, a cycloalkyl group of from 3 to 8 carbon atoms, a (cycloalkyl)alkyl group of from 4 to 8 carbon atoms, an alkenyl group of from 3 to 8 carbon atoms, an alkynyl group of from 3 to 8 carbon atoms, an alkoxyalkyl group of from 3 to 8 carbon atoms, an unsubstituted phenyl group, an aralkyl group of from 7 to 9 carbon atoms, a phenyl group substituted by halogen atom(s), or an alkyl group of from 2 to 8 carbon atoms substituted by fluorine atom(s).