PHENOXYCARBOXYLIC ACID CARBONYLALKYL ESTERS, A PROCESS FOR THEIR PREPARATION AND THEIR USE AS HERBICIDES

摘要

OF THE DISCLCSURE Phenoxycarboxylic acid carbonylalkyl ester compounds of the formula (I), wherein R1, R2, R3 and R4 are individually selected from hydrogen and alkyl; R5 represents hydroxyl, alkoxy (which is optionally substituted by alkoxy, alkylthio, dialkylamino, cyano or halogen), alkenoxy, alkynoxy, aralkoxy, aryloxy or the radical , wherein R6 represents hydrogen alkyl (which is optionally substituted by alkoxy, alkylthio, dialkylamino or cyano), alkenyl, alkynyl, cycloalkyl, aralkyl or aryl (which optionally carries one or more substituents selected independently from alkyl, alkoxy, alkylthio, alkoxycarbonyl, halogen halogenoalkyl and nitro) and R7 represents alkyl (which is optionally substituted by alkoxy, alkylthio, dialkylamino or cyano), alkenyl, alkynyl, cycloalkyl, aralkyl or aryl (which optionally carries one or more substituents selected independently from alkyl, alkoxy, alkylthio, alkoxycarbonyl, halogen, halogenoalkyl and nitro), or R6 and R7, together with the nitrogen atom to which they are bonded, represent an optionally substituted, optionally oompletely or partially unsatur-ated and/or optionally benzo-fused monocyclic or bicyclic ring with up to 15 carbon atoms, which optionally contains 1 to 3 further nitrogen atoms or a further oxygen or sulphur atom as hetero-atom(s), and X represents hydrogen or chlorine, are outstandingly effective herbicides.