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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 34, 2004 - Issue 22
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Original Articles

Mild Microwave‐Assisted Hydrolysis of Acetals Under Solvent‐Free Conditions

Yanhong He Department of Organic and Bioorganic Chemistry, Lund University, P.O. Box 124, Lund, 22100, Sweden
,
Martin Johansson Department of Organic and Bioorganic Chemistry, Lund University, P.O. Box 124, Lund, 22100, Sweden
&
Olov Sterner Department of Organic and Bioorganic Chemistry, Lund University, P.O. Box 124, Lund, 22100, SwedenCorrespondence[email protected]
Pages 4153-4158 | Received 10 Jun 2004, Published online: 10 Jan 2011
 
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Abstract

Acetals are efficiently hydrolyzed with silica gel‐supported pyridinium tosylate moistened with water in solvent‐free conditions under microwave irradiation. The method is efficient and mild, with acid‐sensitive 3‐hydroxyacetals and 3‐methoxyacetals being hydrolyzed in minutes in good yields.

Acknowledgments

Financial support from the Swedish Research Council is gratefully acknowledged. The authors thank Dr. Ulf Ellervik and Dr. Andréas Meijer for the generous gift of protected sugars.

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