Novel substituted nitrodiphenyl ethers, herbicidal compositions containing them, processes for the preparation thereof and the use thereof for combating weeds.

摘要

Novel compounds are provided which exhibit activity as herbicides for combating weeds. The novel compounds have the formula: wherein X is hydrogen, halo, trihalomethyl, alkyl, cyano or nitro; X<1> is hydrogen, halo or trihalomethyl; X<2> is trihalomethyl or halo; Y is O, NH, NR<1> or S; R<1> and R<2> are the same or different and are selected from hydrogen, (C1-C4) alkyl, phenyl and phenyl (C1-C4) alkyl; n is an integer of from 1 to 5; and Z is carboxy, amino, monoalkylamino, or dialkylamino. Also provided are agronomically acceptable salts, esters and amides of a compound of Formula I when Z is carboxy.