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Silver-catalyzed spirolactonization: first synthesis of spiroisoindole-γ-methylene-γ-butyrolactones

Authors :
Mohamed Othman
Mohamed B. Rammah
Mohamed M. Rammah
Kabula Ciamala
Carsten Strohmann
Unité de Recherche en Chimie Organique et Macromoléculaire (URCOM)
Université Le Havre Normandie (ULH)
Normandie Université (NU)-Normandie Université (NU)
Julius-Maximilians-Universität Würzburg [Wurtzbourg, Allemagne] (JMU)
Source :
Tetrahedron, Tetrahedron, Elsevier, 2008, 64 (16), pp.3505-3516. ⟨10.1016/j.tet.2008.01.137⟩
Publication Year :
2008
Publisher :
Elsevier BV, 2008.

Abstract

γ-Acetylenic carboxylic acids are cyclized to spirolactones under mild conditions, in the presence of Ag2CO3 catalyst. The corresponding spiro-5-alkylidene-γ-butyrolactones were isolated in high yields, and this process constitutes an easy and efficient route to analogous structures of natural products of biological interest.

Details

ISSN :
00404020
Volume :
64
Database :
OpenAIRE
Journal :
Tetrahedron
Accession number :
edsair.doi.dedup.....01743934905cb875c4c8fba109cf193a
Full Text :
https://doi.org/10.1016/j.tet.2008.01.137