PROCESS FOR PREPARING PESTICIDAL PYRAZOLE DERIVATIVES AND THEIR INTERMEDIATES, AND THE NOVEL STARTING MATERIALS AND INTERMEDIATES

摘要

The invention relates to novel intermediates in a process for preparing compounds having the formula: wherein R3, R4, R6 and Ar are as defined in the description, by reaction of a compound of formula (I) with a compound of formula (II) according to the following reaction scheme: The compounds of formula (IV) are useful as pesticides.