PROCESS FOR THE PREPARATION 3-ARYL-2-HYDROXYPROPIONIC ACID DERIVATIVE

摘要

A process for the preparation of a compound of formula I in which R represents H or an acid protecting group which comprises reacting a compound of formula II in which R is as previously defined with a compound of formula III wherein X is a suitable leaving group in the presence of a base and a phase transfer catalyst at a temperature in the range 50° C. to 150° C.