A new functionalization of pyridine has been demonstrated by the double cycloaddition reactions between pyridinium N-methylides and methylenecyclopropenes with unsaturated substituents at the 4-position forming a new type of cage compounds.
通过
吡啶鎓N-甲基化物和
亚甲基环丙烯之间的双环加成反应证明了
吡啶的新官能化,在4位具有不饱和取代基,形成新型笼状化合物。