Synthesis 1989; 1989(11): 878-880
DOI: 10.1055/s-1989-27422
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Annulation of Pyridine to Indole by A Tandem Aza-Wittig/Electrocyclization Strategy: Synthesis of Pyrido[2,3-b]indoles

Pedro Molina* , Pilar M. Fresneda
  • *Departamento de Química Orgánica, Facultad de Ciencias Químicas y Matemáticas, Universidad de Murcia, Campus de Espinardo, E-30071 Murcia, Spain
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Publication History

Publication Date:
02 May 2002 (online)

Iminophosphorane 2, prepared form 1 and nitromethane, reacts with isocyanates to give directly 2-alkyl(aryl)amino-3-nitro-9-phenyl-9H-pyrido [2,3-b]indoles 5.