期刊
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
卷 226, 期 1, 页码 57-59出版社
ELSEVIER
DOI: 10.1016/j.molcata.2004.09.024
关键词
acetylation; acetic anhydride; Lewis acid; gadolinium triflate; acetic trifluoromethanesulfonic anhydride
Gadolinium triflate (Gd(OTf)(3)) was found to be a simple and efficient catalyst for the acetylation of alcohols and amines. Acetylation reactions using acetic anhydride as the reagent proceed in excellent yields, in the presence of catalytic amounts (0.01 - 0.1 mol%) of Gd(OTf), at ambient temperature. Aliphatic alcohols as well as phenols and amines undergo acetylations under mild conditions. The intermediate formation of the mixed anhydride, acetic trifluoromethanesulfonic anhydride was demonstrated by C-13 NMR spectroscopy experiments. (C) 2004 Elsevier B.V. All rights reserved.
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