Patent ID: 6498267
Filing Date: 2002-12-24
Classification: C07C,C07D

Abstract:
A process for preparing a compound of the formula (VI) in which R is the radical of an alcohol from the pyrethroid group, which comprises the following steps:a) reaction of an enollactone of the formula (II) with a halofluorinating agent to give a compound of the formula (I) b) reaction of the compound of the formula (I) with a reducing agent to give a cyclopropanecarboxylic acid of the formula (IV) andc) esterification of cyclopropanecarboxylic acid of the formula (IV) with a compound (V) Râˆ’Xâ€ƒâ€ƒ(V) in which X is a leaving group and R is the radical of an alcohol from the pyrethroid group.