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Synthesis 2006(15): 2497-2502
DOI: 10.1055/s-2006-942465
DOI: 10.1055/s-2006-942465
PAPER
© Georg Thieme Verlag Stuttgart · New York
Silica-Supported Perchloric Acid (HClO4-SiO2): A Versatile Catalyst for Tetrahydropyranylation, Oxathioacetalization and Thioacetalization
Further Information
Received
10 February 2006
Publication Date:
04 July 2006 (online)
Publication History
Publication Date:
04 July 2006 (online)
Abstract
A simple and convenient synthetic protocol for the protection of hydroxyl group as tetrahydropyranyl ether as well as carbonyl functionality as oxathioacetal and thioacetal has been achieved using a catalytic amount of silica-supported perchloric acid under solvent-free conditions. This protocol has many advantages compared to currently available methodologies in terms of simplicity, yield, reaction time, reusability of the catalyst and economic viability.
Key words
alcohols - phenols - THP ethers - carbonyl compounds - oxathioacetals - thioacetals
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