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■ High-Pressure Intermolecular Diels-Alder Reactions of the Novel Building Block; 4H,6H-Thieno[3,4-c]furan 5,5-Dioxide

Takayoshi Suzuki, Kan Kubomura, and Hiroaki Takayama*

*Faculty of Pharmaceutical Sciences, Teikyo University, 1091-1 Suarashi, Sagamiko-machi, Tsukui-gun, Kanagawa 199-0195, Japan

Abstract

At high pressure, the furansulfolene, 4H,6H-thieno[3,4-c]furan 5,5-dioxide (1), whose furan and 3-sulfolene moieties could be used as diene components in Diels-Alder reactions, reacted with the dienophiles at its furan moiety selectivity.