Title

Gadolinium Triflate Immobilized in Imidazolium Based Ionic Liquids: A Recyclable Catalyst and Green Solvent for Acetylation of Alcohols and Amines

Abstract

Gadolinium triflate immobilized in room temperature ionic liquids (RTIL) 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]) and 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF6]) was found to be a recyclable and green catalyst for acetylation of a variety of alcohols, phenols and amines. Acetylation reactions using acetic anhydride (Ac2O) as the reagent proceeded in excellent yields in the presence of catalytic amounts (0.2-0.5 mol%) of Gd(OTf)3 immobilized in RTILs, at ambient temperature. In addition, the catalyst system Gd(OTf) 3/[bmim][X] can be recovered and reused efficiently in these transformations.

Department(s)

Chemistry

Second Department

Physics

Sponsor(s)

Petroleum Research Fund

Keywords and Phrases

1 butyl 3 methylimidazolium hexafluorophosphate; 1 butyl 3 methylimidazolium tetrafluoroborate; acetic anhydride; alcohol derivative; amine; gadolinium; gadolinium triflate; imidazole derivative; ion; phenol derivative; reagent; solvent; unclassified drug; acetylation; article; catalysis; catalyst; environmental temperature; immobilization; room temperature

Library of Congress Subject Headings

Acetylation

International Standard Serial Number (ISSN)

14639262

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2005 Royal Society of Chemistry, All rights reserved.


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