文献类型：期刊文献

中文题名：Efficient Knoevenagel condensation catalyzed by imidazole-based halogenfree deep eutectic solvent at room temperature

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,130 Meilong Road,Shanghai,200237,China;[2]School of Chemical Engineering and Technology,Sun Yat-Sen University,135 Xingang West Road,Guangzhou,510275,China

年份：2020

卷号：5

期号：2

起止页码：124

中文期刊名：Green Energy & Environment

外文期刊名：绿色能源与环境（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2019_2020】；

基金：The financial support from National Natural Science Foundation of China(21576081,21776074 and 2181101120)is greatly acknowledged.

语种：英文

中文关键词：Halogen-free DES;Knoevenagel condensation;Room temperature;Recyclable catalyst;Solvent-free condition

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[3Im:PTSA]and[4Im:PTSA]were prepared by imidazole(Im)and p-tol-uenesulfonic 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.