Synthesis of o- (p-tolyl) benzoic acid tert-butyl ester by reacting o- (p-tolyl) benzoic acid with isobutylene with acid catalysis

摘要

The invention relates to a process for the preparation of tert-butyl o- (p-tolyl) benzoate of the formula (I) DOLLAR F1, characterized in that o- (p-tolyl) benzoic acid with isobutylene in the presence of a catalytically active amount Fluorosulfonic acid, trifluoromethanesulfonic acid, a straight-chain or branched perfluoro (C¶2¶-C¶8¶) alkylsulfonic acid or a mixture of these acids.