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E.J. Borkowski, C.E. Ardanaz, P.C. Rossomando and C.E. TonnINTEQUI - CONICET - Facultad de Quimica, Bioquimica y Farmacia. Universidad Nacional de SanLuis. Chacabuco y Pedernera. San Luis (5700), ArgentinaE-mail: edubor@unsl.edu.arIntroductionThe reagents used to oxidize alcohols to ketones in DMSO are believed to form sulfoxonium inter-mediate species by electrophilic attack at the DMSO oxygen [1,2]. In this work we studied the reactionof 3-[γ,γ - dimethylallyl] – coumaric acid methyl ester with 2,4,4,6-tetrabromo-2,5-cyclohexadienone(TBC).ExperimentalThe reaction (Scheme 1) was followed using

Reaction Mechanism for the Cyclization of 3-[γ,γ-Dimethylallyl]Coumaric Acid Methyl Ester in Dimethyl Sulfoxide (DMSO)