| 摘要 |
Insecticidally and acaricidally active novel 1-aryl-3-tert.-butyl-pyrazoles of the formula <IMAGE> in which R1 represents nitro or halogen, R2 represents halogen or the -NR3R4 group, and also may represent hydrogen when R1 denotes halogen, where R3 represents hydrogen, in each case optionally substituted alkyl, alkenyl or alkinyl, and in each case optionally substituted cycloalkyl or cycloalkylalkyl and R4, independently of R3, represents the same radicals as R3l , and, in addition, a <IMAGE> radical, where X represents oxygen or sulphur and R5 represents hydrogen, alkyl, alkenyl, alkinyl, halogenoalkyl, alkoxyalkyl, alkylthioalkyl, optionally substituted cycloalkyl, optionally substituted aryl, alkoxy, alkylthio, optionally substituted aryloxy, optionally substituted arylthio, alkylamino, dialkylamino or optionally substituted arylamino; and Ar represents optionally substituted phenyl, apart from dinitrophenyl, or optionally substituted pyridyl. Intermediates where R1 is replaced by hydrogen are also new and are also pesticidally active. |
