An efficient multicomponent synthesis of 2,4,5-trisubstituted and 1,2,4,5-tetrasubstituted imidazoles catalyzed by a magnetic nanoparticle supported Lewis acidic deep eutectic solvent
作者:Thanh Thi Nguyen、Ngoc-Phuong Thi Le、The Thai Nguyen、Phuong Hoang Tran
DOI:10.1039/c9ra08074k
日期:——
A mild and highly efficient reaction for the synthesis of 2,4,5-trisubstituted and 1,2,4,5-tetrasubstituted imidazoles catalyzed by a magnetically supported Lewis acidic deep eutectic solvent on magnetic nanoparticles (LADES@MNP) has been developed via one-pot multicomponent processes under solvent-free sonication. These reactions have good to excellent yields, mild conditions, and work-up simplicity
磁性负载路易斯酸性深共熔溶剂在磁性纳米粒子上催化合成 2,4,5-三取代和 1,2,4,5-四取代咪唑的温和高效反应 (LADES@MNP )无溶剂超声下的一锅多组分工艺。这些反应具有良好至极好的产率、温和的条件和简单的后处理。该方法代表了一种制备2,4,5-三取代和1,2,4,5-四取代咪唑的新方法。更重要的是,LADES@MNP可以很容易地通过磁选回收并重复使用五次,而催化活性没有明显损失。