Agents containing imidazoline derivatives for the control, based on the host animal system, of ectoparasites, and these imidazolines derivatives

摘要

The present invention is intended to wirtstiersystemischen controlling ectoparasites, characterized in that it comprises a compound of formula I wherein R¹ is hydrogen, (C₁-C₅) alkyl, (C₁-C₃) haloalkyl or halogen; R², R³ independently of each other (C₁-C₅) alkyl, (C₂-C₅) alkenyl, (C₂-C₅) alkynyl, (C₃-C₇) -cycloalkyl, (C₃-C₇) cycloalkenyl, (C₁-C₃) - haloalkyl, halogen, cyano, nitro, (C₁-C₅) alkoxy, (C₁-C₃) alkoxy (C₁-C₃) alkyl, (C₁-C₃) -haloalkoxy, (C₁-C₃) alkylthio, or R² and R³ together form a polymethylene chain of 2 to 5 carbon atoms; R⁴ is hydrogen, (C₁-C₁₀) alkyl, (C₂-C₅) alkenyl, (C₃-C₇) -cycloalkyl; R⁵ is hydrogen, (C₁-C₁₀) alkyl, (C₃-C₅) alkenyl, (C₃-C₅) alkynyl, (C₃-C₇) -cycloalkyl, (C₃-C₇) cycloalkenyl, (C₁-C₃) -haloalkyl or (C₁-C₃) alkoxy (C₁-C₃) alkyl, X is oxygen, sulfur or a -NR⁶ group; R⁶ is hydrogen, (C₁-C₅) alkyl, (C₃-C₅) alkenyl, (C₃-C₅) alkynyl, (C₃-C₇) -cycloalkyl, (C₃-C₇) cycloalkenyl, (C₁-C₃) -haloalkyl or (C₁-C₃) alkoxy (C₁-C₃) alkyl mean and include their biologically acceptable acid addition salts.; The compounds of formula I are novel and are also encompassed by the invention.