Patent ID: 6303812
Filing Date: 2001-10-16
Classification: C07C

Abstract:
A method of isolating the aromatic product formed when a substrate having the general formula ##STR3##is dehalogenated, forming a product mixture of copper salts and said aromatic product comprising(A) adding water to said product mixture in an amount about 1 to about 5 times the amount of said substrate, whereby an organic phase forms that contains said aromatic product and an aqueous phase forms that contains said copper salts;(B) if the density of said organic phase differs from the density of said aqueous phase by less than 0.1 g/cc, adding a suitable solvent to said product mixture in an amount sufficient to increase the difference in density between said organic and aqueous phases to at least 0.1 g/cc; and(C) separating said organic phase from said aqueous phase, where X is the halogen removed from said substrate to form said product, R' is COOH, COOR, COR, CN, COH(R).sub.2, or SO.sub.3 H, each R"" is independently selected from halogen, R, or OR or two vicinal R"" groups form one or more fused aromatic rings, R is alkyl from C.sub.1 to C.sub.18 or aryl from C.sub.6 to C.sub.18, and n is 1 to 4.