Synthesis and application of a novel strong and stable supported ionic liquid catalyst with both Lewis and Bronsted acid sites

被引：74

作者：

Boroujeni, Kaveh Parvanak ^{[1
]}

Ghasemi, Parvin ^{[1
]}

机构：

[1] Shahrekord Univ, Dept Chem, Shahrekord 115, Iran

来源：

CATALYSIS COMMUNICATIONS | 2013年 / 37卷

关键词：

Biscoumarins; Aldehydes; Ionic liquid; One-pot synthesis; Heterogeneous catalysis; RAPID SYNTHESIS; BISCOUMARIN; EFFICIENT; DERIVATIVES; INHIBITORS; COUMARIN;

D O I：

10.1016/j.catcom.2013.03.025

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Poly(4-vinylpyridine)-supported ionic liquid with both Lewis and Bronsted acid sites was easily prepared from its starting materials and used as a novel and highly efficient heterogeneous catalytic system for the synthesis of biscoumarins by two-component one-pot domino Knoevenagel-type condensation/Michael reaction between various aliphatic and aromatic aldehydes with 4-hydroxycoumarin. The Lewis and Bronsted acidic sites loading in [P4VPy-BuSO3H]Cl-X(AlCl3) were found to be 2.15 and 0.9 mmol per gram of catalyst, respectively. The effect of the simultaneous presence of Lewis and Bronsted acid sites was evaluated. The catalyst was characterized by Fourier transform infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), scanning electron microscopy (SEM), elemental analysis, and atomic absorption technique. The catalyst is stable (as a bench top catalyst) and reusable. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：50 / 54

页数：5

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