Polyethylene Glycol (PEG-400) as an Efficient and Recyclable Reaction Medium for One-Pot Synthesis of Substituted Pyrroles Under Catalyst-Free Conditions
β-Cyclodextrin as a recyclable catalyst: aqueous phase one-pot four-component synthesis of polyfunctionalized pyrroles
作者:Karnakar Konkala、Rakhi Chowrasia、Padma S. Manjari、Nelson L. C. Domingues、Ramesh Katla
DOI:10.1039/c6ra08335h
日期:——
straightforward methodology was explored for the first time towards the synthesis of polyfunctionalized pyrroles using β-cyclodextrin as a reusable supramolecular catalyst in aqueous medium. The present method provides various diversely substituted pyrroles from the commercially available synthons in good to excellent yields. The advantages of this novel protocol are use of environmentally benign reaction medium
Iron(III)-Catalyzed Four-Component Coupling Reaction of 1,3-Dicarbonyl Compounds, Amines, Aldehydes, and Nitroalkanes: A Simple and Direct Synthesis of Functionalized Pyrroles
作者:Sukhendu Maiti、Srijit Biswas、Umasish Jana
DOI:10.1021/jo902661y
日期:2010.3.5
A simple, convenient, and multicomponent coupling strategy for the synthesis of highly functionalized pyrroles catalyzed by iron(III) salts has been developed. This strategy demonstrated four-component coupling reactions of 1,3-dicarbonyl compounds, amines, aromatic aldehydes, and nitroalkanes without an inert atmosphere. This methodology provides an alternative approach for easy access of highly substituted
Three-component direct synthesis of substituted pyrroles from easily accessible chemical moieties using hypervalent iodine reagent
作者:Nikhil C. Jadhav、Prashant B. Jagadhane、Hemlata V. Patile、Vikas N. Telvekar
DOI:10.1016/j.tetlet.2013.04.014
日期:2013.6
A novel and simple three-component system has been developed to synthesize substituted pyrroles from corresponding amines and nitrostyrenes using (diacetoxyiodo)benzene at reflux temperature in ethanol. The good to excellent yields were obtained with different types of functional groups. (C) 2013 Elsevier Ltd. All rights reserved.
Polyethylene Glycol (PEG-400) as an Efficient and Recyclable Reaction Medium for One-Pot Synthesis of Substituted Pyrroles Under Catalyst-Free Conditions
作者:Tulam Vijaya Kumar、Ch. Rama Koteswara Rao、K. Mukkanti、Prathama S. Mainkar
DOI:10.14233/ajchem.2015.18334
日期:——
Polyethylene glycol (PEG-400) was found to be an effective and nontoxic reaction medium for the one-pot synthesis of substituted pyrroles under catalyst-free conditions in excellent yields. Environmental acceptability, low cost, high yields and recyclability of the polyethylene glycol are the important features of this protocol.