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Synthesis of Highly Functionalized γ-Lactones via 1,5-Electrocyclic Ring Closure

✍ Scribed by Olcay Anaç; F. Şeyma Güngör; Gökçe Merey

Publisher: John Wiley and Sons
Year: 2006
Tongue: German
Weight: 131 KB
Volume: 89
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.200690120

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✦ Synopsis

Abstract

We have investigated 1,5‐electrocyclic ring‐closure reactions of conjugated esters with dimethyl diazomalonate in the presence of [Cu(acac)~2~] as catalyst. Our new protocol offers an easy entry to various polyfunctionalized γ‐lactones in high yields. Their subsequent derivatives may be used as valuable intermediates, especially in the synthesis of natural products and their analogues.

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