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Communication | Regular issue | Vol 23, No. 5, 1985, pp.1119-1122
Published online, 1st January, 1970
DOI: 10.3987/R-1985-05-1119
■ 1,4-Benzodithiin 1,1,4,4-Tetraoxide as Dienophile

Juzo Nakayama,* Yoichi Nakamura, and Masamatsu Hoshino

*Department of Chemistry, Faculty of Science, Saitama University, Saitama, Saitama 338-8570, Japan

Abstract

1,4-Benzadithiin 1,1,4,4-tetraoxide undergoes the Diels-Alder reaction with a series of dienes under mild conditions to provide the corresponding adducts in excellent yields. The adduct with anthracene is desulfonated to afford dibenzobarrelene, thus showing that the title compound functions as an acetylene equivalent.