Friedel–Crafts catalysts as assistants in the tritylation of less reactive hydroxyls

R Bernini, M Maltese

Index: Bernini, Roberta; Maltese, Maurizio Tetrahedron Letters, 2010 , vol. 51, # 31 p. 4113 - 4116

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Citation Number: 6

Abstract

Less reactive hydroxyls, such as those present in secondary alcohols and in some primary alcohols, phenols and carboxylic acids, were easily tritylated with the homogeneous assistance of equimolar quantities of chlorides of di-and trivalent metals in aprotic solvents. The metal ions allowed both high concentration of the effective reagent triphenylmethylcarbenium ion and mobilisation of the hydroxyl proton, thus giving rise to ...