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Acetonyltriphenylphosphonium Bromide (ATPB): A Versatile Reagent for the Acylation of Alcohols, Phenols, Thiols and Amines and for 1,1-Diacylation of Aldehydes under Solvent-Free Conditions

✍ Scribed by Abu T. Khan; Lokman H. Choudhury; Subrata Ghosh

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
125 KB
Volume
2005
Category
Article
ISSN
1434-193X

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✦ Synopsis

Abstract

A wide variety of alcohols, phenols, amines and thiols may easily be converted into the corresponding acetate derivatives by treatment with acetic anhydride (1.5–2.0 equivalents) in the presence of acetonyltriphenylphosphonium bromide (ATPB; 5 mol %) in good yields at room temperature. With the same precatalyst, both aliphatic and aromatic aldehydes can also be transformed into the corresponding gem‐diacetates under reflux conditions. (Β© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)

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