CYCLIC MALONYLPHOSPHONIC DIAMIDES,PROCESSES FOR THEIR PREPARATION,AND THEIR USE AS PESTICIDES

摘要

Novel pesticidally active cyclic malonylphosphonic diamides of the formula in which Xrepresents O or S, R1 represents alkyl, alkenyl, alkinyl, cycloalkyl, aryl or heteroaryl, each of which can be optionally substituted, R2 represents hydrogen, alkyl, aryl or aralkyl, R3 represents hydrogen, alkyl, aryl or aralkyl, and R4 represents an acyl radical, or salts thereof, Many intermediates are new,