An efficient one-pot synthesis of tetra-substituted pyrroles
摘要:
The three-component reaction of primary amines, dialkyl acetylenedicarboxylates and beta-nitrostyrene derivatives in the presence of Iron(III) chloride afforded 1,2,3,4-tetra-substituted pyrroles in high yields. These reactions could precede via domino Michael addition/cyclization process. (C) 2011 Elsevier Ltd. All rights reserved.
An Efficient One-Pot, Three-Component Synthesis of Tetrasubstituted Pyrroles under Catalyst- and Solvent-Free Conditions
作者:C. Uma Maheswari、Gnanaoli Karthiyayini、Deepan Babu Rajkumar、Subbiah Nagarajan、Vellaisamy Sridharan
DOI:10.1055/a-2113-2981
日期:2023.10
The reaction proceeds via a nucleophilic attack of primaryamine on dialkyl acetylenedicarboxylate followed by Michael addition with β-nitrostyrene and successive intramolecular cyclization and aromatization to yield 1,2,3,4-tetrasubstituted pyrroles in good to excellent yields. A wide range of primaryamines including aromaticamines and benzylamines were coupled with differently substituted β-nitrostyrenes