HERBICIDE COMPOSITIONS CONTAINING SUBSTITUTED NITRO-DIPHENYL-ETHER DERIVATIVES AS ACTIVE INGREDIENTS AND PROCESS FOR PREPARING SUBSTITUTED NITRO-DIPHENYL-ETHER DERIVATIVES

摘要

The compounds of the formula (I) or salts thereof IMAGE where Q is a radical of the formula IMAGE Y is hydrogen or halogen, R1, R2 and R3 are H, (substituted) alkyl, alkenyl, alkynyl, (substituted) alkoxycarbonyl, (substituted) phenyl or R1 and R2 together with the C atom linking them are a hydrocarbon ring, R4 is H, (substituted) alkyl, alkoxycarbonyl or a radical of the formula R5OCO-(C1-C4)alkyl, -COOR5 or R1R5N-CO-(C1-C4)alkyl and R5 is H, (substituted) alkyl, (substituted) phenyl or (substituted) benzyl; m and n are 0 or 1, with the proviso that for m = 1, n must be 0, and for m = 0, n must be 1, and with the exception of the compounds in which the two radicals R3 and R4 are hydrogen, have advantageous herbicidal effects against monocotyledon and dicotyledon harmful plants.