Oxidative coupling of aromatic methyl groups

C - Chemistry – Metallurgy – 07 – C

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204/61, 260/681.

C07C 15/18 (2006.01) C07C 2/82 (2006.01)

Patent

CA 1174698

ABSTRACT Highly selective oxidative coupling of aromatic methyl groups, such as coupling ioluene to DPE, is effected under mild, liquid phase conditions without expensive metal ion catalysts, in presence of substantial amounts, preferably equimolar, of methyl, ethyl or benzyl substituted quaternary ammonium salts. A continuous process is possible by electrolytic regeneration of the spent oxidant.

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