Patent ID: 8207374
Filing Date: 2012-06-26
Classification: C07C

Abstract:
1. A process for preparing an ether of an aromatic acid, the ether being described by the structure of Formula I wherein Ar is a C 6 ˜C 20 monocyclic or polycyclic aromatic nucleus, R is a univalent organic radical, n and m are each independently a nonzero value, and n+m is less than or equal to 8; comprising (a) contacting a halogenated aromatic acid such as is described by the structure of Formula II wherein each X is independently Cl, Br or I, and Ar, n and m are as set forth above, with (i) a polar protic solvent, a polar aprotic solvent or an alcoholic solvent containing the alcoholate RO (ii) a copper (I) or copper (II) source; and (iii) a diketone ligand that coordinates to copper, such as is described by the structure of Formula III wherein A is to form a reaction mixture; (b) heating the reaction mixture to form the m-basic salt of the product of step (a), as described by the structure of Formula IV; (c) optionally, separating the Formula IV m-basic salt from the reaction mixture in which it is formed; and (d) contacting the Formula IV m-basic salt with acid to form therefrom an ether of an aromatic acid.