2-PERHALOGENALKYL-SUBSTITUTED BENZIMIDAZOLES, THEIR PREPARATION AND THEIR USE AS PESTICIDES

摘要

The invention concerns substituted benzimidazoles of general formula (I), in which R<1> is hydrogen, alkyl or optionally substituted aryl; R<2> is hydroxy, cyano, alkoxy or optionally substituted amino; R<3> is perhaloalkyl and X<1>, X<2>, X<3> and X<4>, independently of each other, are hydrogen, halogen, nitro or optionally substituted aryloxy, at least one of the substituents X<1>, X<2>, X<3> and X<4> being different from hydrogen, the compound 1-cyanomethyl-2-trifluoromethyl-5,6-dichlorobenzimidazole being excluded. The invention also concerns the preparation of such compounds and their use as pesticides.