Perchloric Acid Adsorbed on Silica Gel (HClO₄-SiO₂) as an Extremely Efficient and Reusable Catalyst for 1,3-Dithiolane/Dithiane Formation

Santosh Rudrawar, Ram C. Besra, Asit K. Chakraborti*

*National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S. A. S. Nagar, Punjab 160062, India, Email: akchakrabortiniper.ac.in

S. Rudrawar, R. C. Besra, A. K. Chakraborti, Synthesis, 2006, 2767-2771.

DOI: 10.1055/s-2006-942474

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Abstract

Perchloric acid adsorbed on silica gel (HClO₄-SiO₂) has been found to be an extremely efficient and reusable catalyst for 1,3-dithiolane and 1,3-dithiane formation under solvent-free conditions at room temperature.

see article for more examples

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Perchloric Acid Adsorbed on Silica Gel (HClO₄-SiO₂) as an Inexpensive, Extremely Efficient, and Reusable Dual Catalyst System for Acetal/Ketal Formation and Their Deprotection to Aldehydes/Ketones

R. Kumar, D. Kumar, A. K. Chakraborti, Synthesis, 2007, 299-303.

HClO₄-SiO₂ as a new, highly efficient, inexpensive and reusable catalyst for N-tert-butoxycarbonylation of amines

A. K. Chakraborti, S. V. Chankeshwara, Org. Biomol. Chem., 2006, 4, 2769-2771.

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Key Words

HClO₄-SiO₂, catalyst, dithiolanes, dithianes, solvent-free

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ID: J66-Y2006-2680