CINNOLINE DERIVATIVE, PROCESS FOR PREPARING THE SAME AND HERBICIDAL COMPOSITION CONTAINING THE SAME

摘要

A cinnoline derivative having the formula (I): (I) in which X is -OH, -O-M+, -OR1 or , wherein M+ is an alkali metal cation, an alkaline earth metal cation or , in which R4, R5 and R6 are the same or different and each is hydrogen atom, a C1-C6 alkyl group, a C3-C4 alkenyl group, a C3-C4 alkynyl group, a C3-C8 cycloalkyl group, benzyl group or phenyl group: R1 is a C1-C9 alkyl group, a C3-C6 alkenyl group, a C3-C4 alkynyl group, a C1-C3 alkoxy (C1-C4) alkyl group, a C1-C3 haloalkyl group, a C3-C8 cycloalkyl group, benzyl group or phenyl group; and R2 and R3 are the same or different and each is hydrogen atom, a C1-C6 alkyl group, a C3-C4 alkenyl group, a C3C4 alkynyl group, a C3-C8 cycloalkyl group, a benzyl group in which at most two of hydrogen atoms at the .alpha.position thereof may be substituted by methyl group, a C2-C3 hydroxyalkyl group or a phenyl group in which at most three of hydrogen atoms thereof may be substituted by the same or different C1-C2 alkyl group or halogen atom; Y is fluorine atom, chlorine atom, bromine atom, a trihalomethyl group, a C1-C6 alkoxy group or a C1-C2 alkyl group; A is a C1-C3 polyhaloalkyl group; and A' is hydrogen atom, fluorine atom, chlorine atom or bromine atom, a process for preparing the same, and a herbicidal composition containing the same as an active ingredient, a method for controlling undesired weeds using the same, and use of the same as a herbicide.