Process for the preparation of heterocyclic phenyl ethers

摘要

A compound of the formula <IMAGE> or <IMAGE> is reacted with a phenol of the formula <IMAGE> in the presence of an acid to produce a heterocyclic phenyl ether of the formula <IMAGE> wherein each R is independently selected from halogen, trifluoromethyl, nitro, cyano, alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms or alkylthio having 1 to 4 carbon atoms; A is oxygen, sulfur or N-alkyl having 1 to 4 carbon atoms; and n is a number from 0 to 3.