Efficient Knoevenagel condensation catalyzed by imidazole-based halogen-free deep eutectic solvent at room temperature

被引：0

作者：

Hao Qin ^{[1
]}

Yishan Zhou ^{[2
]}

Qian Zeng ^{[1
]}

Hongye Cheng ^{[1
]}

Lifang Chen ^{[1
]}

Bingjian Zhang ^{[2
]}

Zhiwen Qi ^{[1
]}

机构：

[1] Max Planck Partner Group at the State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology

[2] School of Chemical Engineering and Technology, Sun Yat-Sen University

来源：

GreenEnergy&Environment | 2020年 / 5卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Halogen-free DES; Knoevenagel condensation; Room temperature; Recyclable catalyst; Solvent-free condition;

D O I：

暂无

中图分类号：

O621.251 [];

学科分类号：

070303 ; 081704 ;

摘要：

For the first time, we employed the halogen-free deep eutectic solvent(DES) into the Knoevenagel condensation between aromatic aldehydes and active methylene compounds at room temperature. The DESs [3 Im:PTSA] and [4 Im:PTSA] were prepared by imidazole(Im) and p-toluenesulfonic acid(PTSA), which were experimentally screened from a series of organic acids with imidazole. a, b-Unsaturated carbonyl compounds were obtained in good to excellent yields under solvent-free conditions with fast reaction rate. These two DESs can be reused for multiple times with no loss of catalytic activity.

引用

页码：124 / 129

页数：6