The Reactions of Nitrile Oxide–Quinone Cycloadducts. I. Base-Induced Rearrangement of the 1 : 1 –C=C– Adducts of Aromatic Nitrile Oxides with Dialkyl-Substituted<i>p</i>-Benzoquinones
作者:Shinsaku Shiraishi、B. Shivarama Holla、Kiyoshi Imamura、Yukihiko Inoue
DOI:10.1246/bcsj.65.2480
日期:1992.9
cycloadducts, 9-aryl-7-oxa-8-azabicyclo[4.3.0]nona-3,8-diene-2,5-diones, which were obtained from the reactions of aromatic nitrile oxides with dialkyl-substituted p-benzoquinones, underwent an interesting rearrangement on the action of bases. The reactions exhibited incomprehensible substituent effect. The structure elucidation of the rearranged products and the reaction mechanism are described and discussed
1,3-偶极环加合物,9-芳基-7-氧杂-8-氮杂双环[4.3.0]nona-3,8-diene-2,5-diones,由芳香腈氧化物与二烷基反应得到-取代的对苯醌,在碱基作用下经历了有趣的重排。这些反应表现出难以理解的取代效应。描述和讨论了重排产物的结构解析和反应机理。