Biocompatible Ionic Liquid Promote One-Pot Synthesis of 2-Amino-4H-Chromenes Under Ambient Conditions
作者:Anlian Zhu、Qixing Li、Wanlu Feng、Dongshuang Fan、Lingjun Li
DOI:10.1007/s10562-020-03332-7
日期:2021.3
The synthesis of 2-amino-4H-chromenes through one-pot multicomponent reactions has received great attention due to the high atom efficiency and the broad bioactivities of the products. Here, the catalytic performances of a series of functional ionic liquids towards this type of reaction were investigated and the results showed that the ionic liquid, choline acetate ([Choline][Ac]), could efficiently
通过一锅多组分反应合成2-氨基-4H-色烯由于其高原子效率和广泛的生物活性而备受关注。在这里,研究了一系列功能性离子液体对此类反应的催化性能,结果表明离子液体醋酸胆碱([Choline][Ac])可以在室温下有效地促进该反应,而无需有机溶剂。该反应易于进行,后续处理程序非常简单。通过萃取和洗涤程序即可获得纯品,无需柱分离程序。有趣的是,这个反应系统可以很容易地放大到几克,这表明它在工业应用中的前景。此外,离子液体 [Choline][Ac] 可以很容易地由廉价且具有生物相容性的材料制备,并且可以回收和再利用至少五个循环。在室温下,在乙酸胆碱的催化下,各种醛、丙二腈和活化酚可以转化为相应的 2-氨基-4H-色烯,分离产率从良好到极好。