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.
本发明涉及一种制备具有下式的化合物的过程中的新中间体:##STR1## 其中R.sub.3,R.sub.4,R.sub.6和Ar如描述中所定义,通过将式(I)的化合物与式(II)的化合物按照以下反应方案反应而制备:##STR2## 公式(IV)化合物是有用的
杀虫剂。