1-ARYL PYRAZOLES

摘要

Insecticidally active 1-aryl-pyrazoles of the formula in which R1 represents hydrogen, alkyl or haloalkyl, R2 represents alkyl, alkenyl, alkinyl, cycloalkyl, haloalkyl, haloalkenyl, alkoxyalkyl, alkylthioalkyl, alkylsulphinylalkyl, alkylsulphonylalkyl, optionally substituted aralkyl or optionally substituted aryl, R3 represents alkyl, haloalkyl, cycloalkyl or optionally substituted aryl, Ar represents subsituted phenyl, with the exception of the 4-nitrophenyl radical or the 2,4-dinitrophenyl radical, or represents optionally substituted pyridyl, and n represents a number 0, 1 or 2.