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Communication | Regular issue | Vol 12, No. 4, 1979, pp.461-464
Published online, 1st January, 1970
DOI: 10.3987/R-1979-04-0461
Preparation of 3,4-Dibenzoylthiophenes from Alkyl Phenyl Ketones under the Action of Thionyl Chloride

Kitaro Oka*

*School of Pharmacy, Tokyo University of Pharmacy and Life Science, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan

Abstract

Preparation of 3,4-dibenzoylthiophenes from alkyl phenyl ketones such as propiophenone by treatment with a slightly excess thionyl chloride is described. This reaction involves two key steps: (a) olefin-formation and (b) cyclic sulfinylation.