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Synthesis 1993; 1993(12): 1239-1242
DOI: 10.1055/s-1993-26034
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An Efficient, High-Yield, One-Pot Preparation of Pyrrolo[2,3-b]pyridines by a Consecutive Aza Wittig Reaction-Electrocyclic Ring Closure-Intramolecular Amination Process

Pedro Molina* , Enrique Aller, M. Angeles Lorenzo
  • *Departamento de Química Orgánica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, E-30071 Murcia, Spain
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Publication Date:
29 April 2002 (online)

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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.