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ChemInform Abstract: Tandem Dimerization and Double Annulation of 3,3,4,4-Tetracyanobutanal Acetal. Synthesis of a Bicyclic 2-Aminopyridine Derivative.

✍ Scribed by Tsutomu Yokozawa; Akira Nishikata; Takamasa Kimura; Kazuki Shimizu; Tomoyuki Takehana

Publisher: John Wiley and Sons
Year: 2010
Weight: 28 KB
Volume: 30
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199934178

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✦ Synopsis

Tandem

Dimerization and Double Annulation of 3,3,4,4-Tetracyanobutanal Acetal. Synthesis of a Bicyclic 2-Aminopyridine Derivative.

-The acetal (I), easily available by addition of tetracyanoethylene and ethyl vinyl ether to ethanol, undergoes a pyridine promoted dimerization to the fused aminopyridine derivative (II). The diene (III) is isolated and confirmed as intermediate of this transformation. -(YOKOZAWA, TSU-

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