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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 37, 2007 - Issue 4
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Original Articles

Efficient and Ecofriendly Protocol for Tetrahydropyranylation/Depyranylation of Alcohols in the Presence of Tin(II) Chloride Dihydrate

, &
Pages 593-597 | Received 12 Jul 2006, Published online: 06 Mar 2007
 

Abstract

A mild, efficient, and solvent‐free protocol for tetrahydropyranylation of alcohols in the presence of a catalytic amount of SnCl2 · 2H2O is reported. Simple filtration of the reaction mixture through a short silica‐gel pad gives the pure products in excellent yields. Depyranylation can also be achieved by adding methanol under similar reaction conditions.

Acknowledgments

Authors are grateful to the vice‐chancellor, Dibrugarh University, for giving the facility to work. Thanks are also due to Nabin C. Baruah, Regional Research Laboratory, Jorhat, and P.K. Gogoi, Chemistry Department, D.U., for their valuable suggestions and help.

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