react with the methylenecyclopropenes with unsaturated substituents at the 4-position in the fashion of double cycloaddition reaction, leading to the novel cage compounds, which involves an intermorecular 1,3-dipolar cycloaddition reaction and an intramolecular Diels-Alder reaction.
咪唑鎓二
氰基甲基化物和双(乙氧羰基)甲基化物等
咪唑鎓以双环加成反应的方式与4位具有不饱和取代基的
亚甲基环丙烯反应,产生新型笼状化合物,其中涉及分子间1,3-偶极环加成反应和分子内 Diels-Alder 反应。