3-b]quinoline ring system involving the sequential formation of the pyridine ring (electrocyclic ring-closure) and the pyrrole (nitreneinsertionreaction) rings. This approach is based on the regioselective formation of the iminophosphorane 2 from the bis(azide) 1, followed by aza Wittig reaction with isocyanates and further thermal treatment.
一种制备吡咯并[2,3- b ]喹啉环系的新方法,该方法涉及依次形成吡啶环(电环闭环)和吡咯(硝烯插入反应)环。该方法基于由双(叠氮化物)1形成亚氨基磷烷2的区域选择性,然后进行与异氰酸酯的aza Wittig反应并进一步热处理。