Catalyst application of ZnO nanostructures in solvent free synthesis of polysubstituted pyrroles
作者:Maryam Sabbaghan、Azam Ghalaei
DOI:10.1016/j.molliq.2013.12.018
日期:2014.5
A simple, rapid, efficient, and environmentally benign procedure for synthesis of polysubsfituted pyrroles has been achieved by the three-component reaction of amines, phenacyl bromide and dialkyl acetylenedicarboxylates under solvent free conditions using nano structures of ZnO as catalyst. Different morphologies such as nanorods and nanosheets of catalysis have been synthesized by simple reflux method using sodium dodecylsulfate (SDS) and applied in this reaction. Nanorod ZnO catalyst exhibited a significant enhancement in the yield of the desired product. The catalyst exhibited remarkable reusable activity. (C) 2013 Elsevier B.V. All rights reserved.
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