4-haloalkylthio-5-amino-1-arylpyrazoles, composition containing them, and insecticidal and acaricidal method of using them

摘要

Insecticidally and acarididally active 1-arylpyrazoles of the formula <IMAGE> in which R1 represents hydrogen, alkyl or halogen alkyl, R2 represents alkyl, alkenyl, alkinyl, cycloalkyl, halogenoalkyl, halogenoalkenyl, alkoxyalkyl, alkylthioalkyl, alkylsulphinylalkyl, alkylsulphonylalkyl, optionally substituted aralkyl or optionally substituted aryl, R3 represents alkyl, alkenyl, alkinyl, halogenoalkyl, halogenoalkenyl, alkoxyalkyl, alkylthioalkyl, cycloalkyl or optionally substituted aralkyl, R4 represents alkyl, alkenyl, alkinyl, halogenoalkyl, halogenoalkenyl, alkoxyalkyl, alkylthioalkyl, cycloalkyl or optionally substituted aralkyl, and, in addition, also represents hydrogen in the case where R3 does not simultaneously represent unsubstituted alkyl, or R3 and R4, together with the nitrogen atom to which they are bound, represent a saturated heterocycle, which can optionally contain further heteroatoms, Ar represents in each case optionally substituted phenyl or pyridyl, and n represents a number 0, 1 or 2.