Polysubstituted pyrroles were regioselectively synthesized in moderate to good yields via the copper acetate-catalyzed [3 + 2] annulation reaction of readily accessible aziridines and nitroalkenes. This reaction was proposed to proceed through a key azomethine ylide intermediate generated by selective C–C bond cleavage of the aziridine followed by annulation with nitroalkenes under aerobic conditions
多聚取代的
吡咯通
过乙酸铜催化的易获得的
氮丙啶和硝基烯烃的[3 + 2]环化反应,以中等至良好的产率进行区域选择性合成。该反应被提议通过一个关键的偶氮甲叶立德中间体进行,该中间体由
氮丙啶的选择性C-C键裂解产生,然后在有氧条件下用硝基烯烃环化。