Novel Basic Ionic Liquid Based on Alkylammonium as Efficient Catalyst for Knoevenagel Reaction
作者:Shuai Zhou、Lu Liu、Bo Wang、Mingguo Ma、Feng Xu、Runcang Sun
DOI:10.1080/00397911.2010.540692
日期:2012.5.1
condensation demonstrated the good stability and operability of the ionic liquid. Moreover, the typical nucleophilic addition reactions were also accomplished by the same ionic liquid to check its feasibility. The dual function of the basic ionic liquid both as solvent and catalyst, combined with simple product separation and recycling, is expected to contribute to the development of a green and environmentally
摘要 在N,N,N',N'-四甲基-N'-己基-乙二铵四氟硼酸([TMHEDA]BF4)碱性离子液体存在下,典型的Knoevenagel缩合反应顺利进行,产率为99%。使用氰乙酸乙酯和苯甲醛作为底物,在 60°C 下放置 1 小时获得。离子液体的四次重复使用没有显着降低 Knoevenagel 缩合的催化活性,证明了离子液体的良好稳定性和可操作性。此外,典型的亲核加成反应也由相同的离子液体完成,以检验其可行性。碱性离子液体作为溶剂和催化剂的双重功能,结合简单的产品分离和回收,有望为绿色环保战略的发展做出贡献。图形概要