Carbonyl ylide reactions of α-benzylidene-β-dicarbonyl compounds: competitive formation of dihydrofurans and dihydrobenzoxepines


Anac O. , SEZER Ö. , CANDAN O., GUNGOR F. Ş. , CANSEVER M. S.

Tetrahedron Letters, vol.49, no.6, pp.1062-1065, 2008 (Journal Indexed in SCI Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 49 Issue: 6
  • Publication Date: 2008
  • Doi Number: 10.1016/j.tetlet.2007.11.197
  • Title of Journal : Tetrahedron Letters
  • Page Numbers: pp.1062-1065

Abstract

α-Benzylidene-β,β′-biscarbonyl compounds were reacted with dimethyl diazomalonate using Cu(II) acetylacetonate as a catalyst. Dihydrofurans or mixtures of dihydrofurans and dihydrobenzoxepines were obtained depending on the nature of the carbonyl group present in the starting material. © 2007 Elsevier Ltd. All rights reserved.