Aza-Crown Ether Complex Cation Ionic Liquids: Preparation and Applications in Organic Reactions
作者:Yingying Song、Chen Cheng、Huanwang Jing
DOI:10.1002/chem.201403118
日期:2014.9.26
Aza‐crown ether complex cation ionic liquids (aCECILs) were devised, fabricated, and characterized by using NMR spectroscopy, MS, thermogravimetric differential thermal analysis (TG‐DTA), elemental analysis and physical properties. These new and room‐temperature ILs were utilized as catalysts in various organic reactions, such as the cycloaddition reaction of CO2 to epoxides, esterification of acetic
通过使用NMR光谱,MS,热重差热分析(TG-DTA),元素分析和物理性质设计,制造和表征了氮杂-冠醚络合阳离子液体(aCECIL)。这些新型的室温离子液体在各种有机反应中用作催化剂,例如CO 2与环氧化物的环加成反应,乙酸和醇的酯化,苯胺与碳酸亚丙酯的缩合反应以及吲哚的Friedel-Crafts烷基化反应。用醛进行了仔细研究。在这些反应中,离子液体在阴离子和阳离子之间表现出协同的催化活性。另外,aza‐ [18‐C‐6HK] [HSO 4 ] 2 在温和的反应条件下,是酯化反应和Friedel-Crafts烷基化反应中最好的酸性催化剂。