Ionic Liquid Promoted Multicomponent Reaction: A Good Strategy for the Eco-Compatible Synthesis of Functionalized Pyrroles
作者:I. R. Siddiqui、Devesh Kumar、Shayna Shamim
DOI:10.1002/jhet.1085
日期:2013.2
reusable, alternative, and effective reaction media for multicomponentsynthesis of highly functionalized pyrroles. Generality of the procedure was established by synthesizing various pyrroles from wide range of aromatic/aliphatic amine, phenacyl bromide, and electrophilic alkynes by utilizing this protocol without any acid or metal catalyst. Ecocompatibility, short reaction time, excellent yield, recyclability
The three-component reactions of phenacyl bromide or its derivatives, amine, and dialkyl acetylenedicarboxylate in the presence of iron(III) chloride as a catalyst at room temperature afforded polysubstituted pyrroles in high yields. polysubstituted pyrroles - three-component reaction - iron(III) chloridePart 283 in the series ‘Studies on Novel Synthetic Methodologies’.
A simple and efficient synthesis of highly substituted pyrroles was achieved in water medium via multi-component strategy, using amine, DMAD/DEAD as well as phenacyl bromide catalyzed by beta-CD. Utilizing this protocol various pyrrole derivatives were synthesized in good to excellent yields. (C) 2012 Y.V.D. Nageswar. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.