Gadolinium triflate immobilized in imidazolium based ionic liquids: a recyclable catalyst and green solvent for acetylation of alcohols and amines

被引：42

作者：

Alleti, R ^{[1
]}

Oh, WS ^{[1
]}

Perambuduru, M ^{[1
]}

Afrasiabi, Z ^{[1
]}

Sinn, E ^{[1
]}

Reddy, VP ^{[1
]}

机构：

[1] Univ Missouri, Dept Chem, Rolla, MO 65409 USA

来源：

GREEN CHEMISTRY | 2005年 / 7卷 / 04期

关键词：

D O I：

10.1039/b416359a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：203 / 206

页数：4

共 28 条

[1]

ALLETI R, 2002, J MOL CATAL A-CHEM, V126, P57

[2]

Carrigan MD, 2001, SYNTHESIS-STUTTGART, P2091

[3] Lewis acid catalyzed acylation reactions: scope and limitations [J].