An Efficient Procedure for the Synthesis of Polysubstituted Pyrroles in an Ionic Liquid
作者:Yan-Hong He、Gang-Qiang Wang、Ke-Ling Xu、Zhi Guan
DOI:10.1515/znb-2011-0212
日期:2011.2.1
1-butyl-3-methyl-imidazolium hydrogen sulfate, [bmim]HSO4, was used as a catalyst and reaction medium for the pyrrole synthesis, and a wide range of aliphatic, aromatic, heteroaromatic and carboxylic 1,4-diketones easily underwent condensations with aniline and ethylenediamine to form polysubstituted pyrroles. Sequential decarboxylation/Paal-Knorr pyrrole condensation was observed, which provides a new
离子液体 1-丁基-3-甲基-咪唑硫酸氢盐 [bmim]HSO4 用作吡咯合成的催化剂和反应介质,以及广泛的脂肪族、芳香族、杂芳香族和羧基 1,4-二酮容易与苯胺和乙二胺缩合形成多取代的吡咯。观察到顺序脱羧/Paal-Knorr 吡咯缩合,这为从 1,4-二酮-2,3-二羧酸酯制备单酯吡咯提供了一种新的、简便的方法。图形摘要 一种在离子液体中合成多取代吡咯的有效方法