3-ARYL-TETRONIC ACID DERIVATIVES, PREPARATION AND USE THEREOF, ANTIPARASITIC COMPOSITIONS CONTAINING THESE COMPOUNDS AS ACTIVE INGREDIENTS

摘要

The present invention relates to new 3-aryl-4-hydroxy- DELTA 3-dihydrofuranone derivatives of the formula (I) in which A and B together with the carbon atom to which they are bonded form an unsubstituted or substituted 5- to 7-membered ring which is interrupted by at least one hetero atom, X represents alkyl, halogen or alkoxy, Y represents hydrogen, alkyl, halogen, alkoxy or halogenoalkyl, Z represents alkyl, halogen or alkoxy, n represents a number 0, 1, 2 or 3, G represents hydrogen (a) or one of the groups E represents a metal ion equivalent or an ammonium ion, L represents oxygen or sulphur, M represents oxygen or sulphur and R1, R2, R3, R4, R5, R6 and R7 have the meanings given in the description, to processes for their preparation, and to their use as pesticides.