PROCESS FOR THE PREPARATION OF HERBICIDES

摘要

PROCESS FOR THE PREPARATION OF HERBICIDES The invention relates to a process for the preparation of a compound of formula I I R is alkyl, and X is bromine or iodine which process comprises : reacting a compound of formula II in a two phase system, said system comprising an aqueous phase and an organic phase comprising a water immiscible solvent, with an acylating agent of formula III or IV in the presence of D base catalyst. II III IV