The invention relates to novel intermediates in a process for preparing compounds having the formula: ##STR1## wherein R.sub.3, R.sub.4, R.sub.6 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: ##STR2## The compounds of formula (IV) are useful as pesticides.
[EN] PROCESS FOR PREPARING PYRAZOLE DERIVATIVES<br/>[FR] PROCEDE POUR LA PREPARATION DE DERIVES DE PYRAZOLE
申请人:RHONE-POULENC AGRO
公开号:WO1998040358A1
公开(公告)日:1998-09-17
(EN) The invention relates to a process for preparing compounds having formula (IV), 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 reaction scheme. The compounds of formula (IV) are useful as pesticides.(FR) L'invention concerne un procédé pour la préparation de composés de formule (IV) où R3, R4, R6 et Ar ont la signification mentionnée dans la description par la réaction d'un composé de formule (I) avec un composé de formule (II) selon la séquence suivante de réaction: (I), (II), (III) et (IV). Les composés de formule (IV) sont utilisés comme pesticides.