合成了一系列离子液体,并研究了它们对 Cu 催化的一锅法 A 3偶联反应合成炔丙胺的协同作用。结果表明,基于离子液体[MEA][H 2 PO 4的复合催化体系]和CuI对目标炔丙胺具有优异的催化活性和选择性,一系列具有吸电和给电基团的芳香醛和杂芳醛均能达到良好至优异的分离产率。该催化体系反应条件温和,操作程序简单,不涉及挥发性有机溶剂和其他添加剂,也不需要惰性气体保护。此外,该工作中使用的离子液体易于制备,其利用使催化体系可回收。所有这些优势使得该催化体系高效且环保地用于炔丙胺的合成。 图形概要
One-Pot Synthesis of 3,4-Dihydro-2(H)-Pyrimidinones Catalyzed by Reusable Acidic Choline-Based Ionic Liquids
作者:Anlian Zhu、Qianqian Li、Lingjun Li、Jianji Wang
DOI:10.1007/s10562-013-0978-6
日期:2013.5
A series of choline-basedionicliquids (CIL) have been synthesized in this work. The results suggested that both the cations and the anions have significant influences on their properties such as thermostabilities, acidities and their performances for the synthesis of 3,4-dihydro-2(H)-pyrimidinones. The optimized catalytic system based on the CIL [DMEA][HSO4] for the Biginelli reactions benefits from
Cleaner enzymatic production of biodiesel with easy separation procedures triggered by a biocompatible hydrophilic ionic liquid
作者:Anlian Zhu、Wanlu Feng、Zhiyong Li、Shuang Cheng、Qianhan Chen、Dongshuang Fan、Yuanyang Guo、Lingjun Li、Jianji Wang
DOI:10.1039/c9gc03796a
日期:——
A biocompatible and hydrophilic ionic liquid was found to efficiently promote the enzymatic production of biodiesel with excellent yields from different oil resources.
The alkylation of iso-butane with 1-butene was catalyzed by triflic acid (TFOH) coupled with a series of protic ammonium-based ionic liquids (AMILs), and the addition of the AMILs dramatically enhanced the efficiency of TFOH for the alkylation reaction. Up to 85.1% trimethylpentanes (TMP) selectivity and 98 research octane number (RON) were achieved with the optimized TFOH/AMIL catalyst ( 75 vol.% triflic acid and 25 vol.% triethylammonium hydrogen sulfate), which were much better than that with the commercial H2SO4 catalyst (65% TMP selectivity, 97 RON) and pure triflic acid. The addition of AMILs increased the I/O ratio dissolved in the catalyst system and adjusted the acidity of the TFOH/AMILs catalyst system, which were highly beneficial to the alkylation reaction and resulted in high TMP selectivity and high RON. (c) 2012 Elsevier B.V. All rights reserved.
An efficient and reusable ionic liquid catalyst for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes under solvent-free conditions
作者:Anlian Zhu、Shukun Bai、Wei Jin、Ruixia Liu、Lingjun Li、Yang Zhao、Jianji Wang
DOI:10.1039/c4ra06521b
日期:——
In this work, it was found that acidic protic ionicliquid N,N-dimethylaminoethanol hydrosulfate ([DMEA][HSO4]) was an efficient and reusable catalyst for the one-pot synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes under solvent-free conditions. This ionicliquid is very cheap, air and water stable, and can be easily recovered and reused for at least six cycles. The catalytic system described here is