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Short Paper | Regular issue | Vol 104, No. 5, 2022, pp.969-978
Published online, 7th February, 2022
DOI: 10.3987/COM-22-14621
Triflic Acid Adsorbed on Silica Gel as an Efficient Catalyst for O-Isopropylidenation of Sugar Derivatives

Lisha Wu, Shuying Li, Wei Guo, and Shiqiang Yan*

*Weihai Ocean Vocational College, Weihai, 264300, China

Abstract

Triflic acid immobilized on silica gel has been identified as an excellent catalyst for the chemoselective O-isopropylidenation of free sugars and functionalized carbohydrates with acetone. This method is simple and economic for large-scale synthesis together with good to excellent yield, low catalyst loading and non-aqueous workup procedure.