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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 35, 2005 - Issue 1
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Original Articles

Cycloisomerization of Olefinic Carboxylic Acids Catalyzed by Trifluoromethanesulfonic Acid

Lydie Coulombel Laboratoire Arômes, Synthèses et Interactions, UMR CNRS 6001 Université de Nice‐Sophia Antipolis, Parc Valrose, Nice cedex 2, France
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Elisabet Duñach Laboratoire de Chimie Bio‐Organique, UMR CNRS 6001 Université de Nice‐Sophia Antipolis, Parc Valrose, 06108, Nice cedex 2, France; Laboratoire Arômes, Synthèses et Interactions, UMR CNRS 6001 Université de Nice‐Sophia Antipolis, Parc Valrose, Nice cedex 2, FranceCorrespondence[email protected]
Pages 153-160 | Received 19 Sep 2004, Published online: 22 Jun 2006
 
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Abstract

The trifluoromethanesulfonic acid‐catalyzed cyclization of various differently substituted unsaturated carboxylic acids affords selectively substituted lactones in good yields. The reactions use 0.5 to 5% molar ratio of catalyst and can be run without solvent.

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