Tetrahedron Letters

Tris (pentafluorophenyl) borane: a mild and efficient catalyst for the chemoselective tritylation of alcohols

CR Reddy, G Rajesh, SV Balaji, N Chethan

Index: Reddy, Ch. Raji; Rajesh; Balaji; Chethan Tetrahedron Letters, 2008 , vol. 49, # 6 p. 970 - 973

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Citation Number: 24

Abstract

An efficient acid-catalyzed protection of alcohols as trityl ethers is described using triphenylmethanol in the presence of tris (pentafluorophenyl) borane (3mol%) in dichloromethane at room temperature. The chemoselectivity of this protocol is demonstrated by studying the tritylation of a primary alcohol in the presence of a secondary alcohol and also the mildness of this catalyst was studied with substrates containing acid labile ...