An Efficient, High-Yield, One-Pot Preparation of Pyrrolo[2,3-<i>b</i>]pyridines by a Consecutive Aza Wittig Reaction-Electrocyclic Ring Closure-Intramolecular Amination Process
作者:Pedro Molina、Enrique Aller、M. Angeles Lorenzo
DOI:10.1055/s-1993-26034
日期:——
Aza Wittig reaction of iminophosphoranes derived from ethyl (E,E,E)-1-azido-7-phenyl-2,4,6-heptatrienoate with aromatic isocyanates in nitrobenzene at reflux temperature leads directly to pyrrolo[2,3-b]pyridines in good yields.
由乙基(E,E,E)-1-叠氮基-7-苯基-2,4,6-庚三烯酸酯衍生的亚胺臑在回流温度下的硝基苯中与芳香异氰酸酯进行Aza Wittig反应,直接生成高产率的吡咯[2,3-b]吡啶。