CYCLOADDITION REACTIONS OF ARYL 2-FURYL THIONES AND ARYL 2-THIENYL THIONES WITH MALEIC ANHYDRIDE AND 2-NORBORNENE
作者:Haruo Ohmura、Shinichi Motoki
DOI:10.1246/cl.1981.235
日期:1981.2.5
The reactions of aryl 2-furyl thiones with maleic anhydride and 2-norbornene gave 1,4-cycloadducts. The reactions of aryl 2-thienyl thiones with maleic anhydride gave aromatized and oxidized 1,4-cycloadducts, while the reaction with 2-norbornene gave only normal 1,4-cycloadducts. In these reactions, one of the double bond in the furan or thiophene ring and the thiocarbonyl group reacted as a hetero
芳基 2-呋喃基硫酮与马来酸酐和 2-降冰片烯反应生成 1,4-环加合物。芳基 2-噻吩基硫酮与马来酸酐的反应产生芳构化和氧化的 1,4-环加合物,而与 2-降冰片烯的反应仅产生正常的 1,4-环加合物。在这些反应中,呋喃或噻吩环中的双键和硫代羰基之一作为杂二烯体系反应。