The acidic ionic liquid [BSO<sub>3</sub>HMIm]HSO<sub>4</sub>: a novel and efficient catalyst for one-pot, three-component syntheses of substituted pyrroles
作者:Yuan Luo、Bao-Qiang Zhang、Yan-Hong He、Zhi Guan
DOI:10.1515/znb-2014-0108
日期:2015.1.1
was used as an efficient catalyst for the synthesis of a variety of pyrrole derivatives via a one-pot, three-component condensation of amines, nitroolefins, and 1,3-dicarbonyl compounds. Good to excellent yields of 72–96% were obtained under reflux in ethanol. The catalyst could easily be recovered and recycled up to six times, resulting in good yields without prolonging the reaction time. This method
摘要 酸性离子液体 3-甲基-2-(1-磺丁基)-1H-咪唑鎓硫酸氢盐 [BSO3HMIm]HSO4 被用作一种有效的催化剂,通过一锅、三胺、硝基烯烃和 1,3-二羰基化合物的组分缩合。在乙醇中回流下获得了 72-96% 的良好收率。催化剂可以很容易地回收和循环使用多达六次,从而在不延长反应时间的情况下获得良好的收率。这种方法在大规模制备中也是有效的。该程序可以很容易地扩展为一锅四组分反应。这种离子液体催化的反应为吡咯衍生物的合成提供了一种环境友好的替代方法。