4.4 Article

On the role of triflic acid in the metal triflate-catalysed acylation of alcohols

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TETRAHEDRON LETTERS
卷 45, 期 4, 页码 825-829

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PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2003.11.034

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triflic acid; acylation; metal triflate

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The acylation of alcohols by anhydrides, catalysed by a wide range of metal triflates, is a powerful and mild method for the preparation of a variety of esters. Mechanistic insights demonstrate that triflic acid is generated under these reaction conditions and that, at least, two competing catalytic cycles are operating at the same time: a rapid one involving triflic acid and a slower one involving the metal triflate. (C) 2003 Elsevier Ltd. All rights reserved.

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