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A new entry to the preparation of pyrrolo[2,3-b]quinolines by an aza Wittig/electrocyclic ring-closure/nitrene insertion process

✍ Scribed by Pedro Molina; Julián Alcántara; Carmen López-Leonardo

Book ID: 104207617
Publisher: Elsevier Science
Year: 1997
Tongue: French
Weight: 350 KB
Volume: 53
Category: Article
ISSN: 0040-4020
DOI: 10.1016/s0040-4020(97)00038-0

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✦ Synopsis

A new method for the preparation of the pyrrolo[2,3-b]quinoline ring system involving the sequential formation of the pyridine ring (electrocyclic ring-closure) and the pyrrole (nitrene insertion reaction) 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.

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