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Efficient Synthesis of Five- and Seven-Membered-Ring Heterocycles by Rhodium(II)-Catalyzed [3+2] and [3+4] Cycloaddition of Diazodicarbonyl Compounds with Conjugated Dienes

✍ Scribed by Yong Rok Lee; Jae Cheol Hwang

Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 192 KB
Volume: 2005
Category: Article
ISSN: 1434-193X
DOI: 10.1002/ejoc.200400452

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✦ Synopsis

Abstract

Rhodium(II)‐catalyzed reactions of diazodicarbonyl compounds with a variety of conjugated dienes have been examined. These reactions provide a simple and rapid route to dihydrofurans and dihydrooxepines with a variety of substituents on the ring. The formation of these products is interpreted in terms of a stepwise mechanism. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)

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