Photoactive bithienyl pesticides

摘要

Bithienyl compounds of the following structural formula are phototoxic insecticides and acaricides: <IMAGE> wherein R1 is selected from hydrogen, halogen, alkyl, haloalkyl, alkoxy, haloalkoxy, haloalkenoxy, phenyl, phenoxy, nitro, alkylsulfinyl, alkylsulfonyl, and alkylthio provided R4 is other than hydrogen; R2 is selected from hydrogen and halogen, or R1 and R2 at adjacent positions are joined to form C4H4; R3 is selected from hydrogen, alkyl, thienyl, and phenyl optionally substituted with alkyl, alkoxy, or 1-2 halogen; and R4 is selected from hydrogen, halogen, alkyl, haloalkyl, alkoxy, alkylthio, alkylsulfinyl, haloalkenylthio, formyl, alkylcarbonyl, alkoxycarbonyl, phenylcarbonyl, dialkylphosphono, and nitro.