IMIDAZOLIN DERIVATIVES CONTAINING AGENTS FOR THE ECONOMIC CONTROL OF ECTOPARASITES AND NEW IMIDAZOLINE DERIVATIVES

摘要

The present invention relates to agents for systemic combating of ectoperasites in host animals, containing a compound of the formul I IMAGE (I) in which R1 denotes hydrogen, (C1-C5)-alkyl, (C1-C3)-halogenoalkyl or halogen; R2 and R3 independently of one another denote (c1-C5)-alkyl, (C2-C5)-alkenyl, (C2-C5)-alkynyl, (C3-C7)-cycloalkyl, (C3-C7)-cycloalkenyl, (C1-C3)-halogenoalkyl, halogen, cyano, nitro, (C1-C5)-alkoxy, (C1 -C3)-alkoxy-C1-C3)-alkyl, (C1-C3)-halogenoalkoxy or (C1-C3)-alkylthio, or R2 and R3 together form a polymethylene chain having 2 to 5 carbon atoms: R4 denotes hydrogen, (c1-C10)-alkyl, (C2-C5)-alkenyl or (C3-C7)-cycloalkyl; R5 denotes hydrogen, (C1-C10)-alkyl, (C3-C5)-alkenyl, C3-C5)-alkynyl, (C3-C7)- cycloalkyl, (C3-C7)-cycloalkenyl, (C1-C3)-halogenoalkyl or (C1-C3)-alkoxy-(C hd 1-C3)-alkyl; X denotes oxygen, sulfur or an -NR6-group; and R6 denotes hydrogen, (C1-C5)-alkyl, (C3-C5)-alkenyl, C3-C5)-alkynyl, (C3-C7)-cycloalkyl, C3-C7)-cycloalkenyl, (C1-C3)-halogenoalkyl or (C1-C3)-alkoxy-(C1 -C3)-alkyl, or biologically tolerated acid addition salts thereof. The compounds of the formulas I are novel in some cases and are likewise included in the invention.