A green protocol for chemoselective O-acylation in the presence of zinc oxide as a heterogeneous, reusable and eco-friendly catalyst
F Tamaddon, MA Amrollahi, L Sharafat
Index: Tamaddon, Fatemeh; Amrollahi, Mohammad Ali; Sharafat, Leily Tetrahedron Letters, 2005 , vol. 46, # 45 p. 7841 - 7844
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Citation Number: 108
Abstract
The protection of hydroxyl groups by esterification constitutes the major backbone of many preparations of natural and synthetic products such as perfumes, flavors and food additives, cosmetics, pharmaceuticals, plastisizers and polymers. 1 Generally, esterification is carried out by acylation of alcohols and phenols with carboxylic acids and more conveniently anhydrides or acyl chlorides in the presence of basic catalysts, Brönsted or Lewis acids and metal salts. 1b Amongst ...
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