Silica-Supported Perchloric Acid (HClO4-SiO2): A Versatile Catalyst for Tetrahydropyranylation, Oxathioacetalization and Thioacetalization
Abu T. Khan*, Tasneem Parvin, Lokman H. Choudhury
*Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781 039, India, Email: atkiitg.ernet.in
A. T. Khan, T. Parvin, L. H. Choudhury, Synthesis, 2006, 2497-2502.
A simple and convenient synthetic protocol for the protection of hydroxyl groups as tetrahydropyranyl ethers as well as carbonyl functionalities as oxathioacetals and thioacetals has been achieved using a catalytic amount of silica-supported perchloric acid under solvent-free conditions.
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