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ChemInform Abstract: A New Ring Contraction Rearrangement of 2,5- and 3,6-Di-tert-butyl-3H- azepines to Pyridine Derivatives.

✍ Scribed by K. SATAKE; K. TAKAOKA; M. HASHIMOTO; H. OKAMOTO; M. KIMURA; S. MOROSAWA

Publisher: John Wiley and Sons
Year: 2010
Weight: 28 KB
Volume: 28
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199718173

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✦ Synopsis

A New Ring Contraction Rearrangement of 2,5-and 3,6-Di-tertbutyl-3H-azepines to Pyridine Derivatives. -A novel ring contraction reaction of di-tert-butyl-substituted 3H-azepines furnishing pyridine derivatives under bromination conditions is described. A plausible mechanism for the rearrangement via an azatropylium cation is discussed.

-(SATAKE, K.;

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