Paal–Knorr Pyrrole Synthesis Using Recyclable Amberlite IR 120 Acidic Resin: A Green Approach
作者:Aarti Devi、Shallu、M. L. Sharma、Jasvinder Singh
DOI:10.1080/00397911.2010.540766
日期:2012.5.15
Abstract Amberlite IR 120 acidic resin, a polymer matrix, has been demonstrated as a catalyst for Paal-Knorrcondensation of 2,5-hexadione with primary amines under solvent-free conditions. This is an efficient, mild, and green methodology for N-substitutedpyrrole derivatives. GRAPHICAL ABSTRACT
摘要 Amberlite IR 120 酸性树脂是一种聚合物基质,已被证明可作为 2,5-己二酮与伯胺在无溶剂条件下进行 Paal-Knorr 缩合的催化剂。这是一种用于 N 取代吡咯衍生物的高效、温和且绿色的方法。图形概要
An expeditious and highly efficient synthesis of substituted pyrroles using a low melting deep eutectic mixture
作者:Shakeel Alvi、Rashid Ali
DOI:10.1039/d1ob01618k
日期:——
An expeditious green method for the synthesis of diverse valued substitutedpyrroles through a Paal–Knorr condensation reaction, using a variety of amines and 2,5-hexanedione/2,5-dimethoxytetrahydrofuran in the presence of a low melting mixture of N,N’-dimethylurea and L-(+)-tartaric acid (which acts as a dual catalyst/solvent system), has fruitfully been revealed. Herein, we have disclosed the applicability
Sulfated anatase-titania (TiO2–SO42−) has been used as a solid acid catalyst for the synthesis of substituted pyrroles from γ-diketone and aromatic/aliphatic (acyclic and cyclic) primary amines by ...
Zinc tetrafluoroborate-catalysed synthesis of highly substituted pyrroles by a solvent-free reaction
作者:Brindaban C. Ranu、Sudip Ghosh、Arijit Das
DOI:10.1070/mc2006v016n04abeh002287
日期:2006.1
A simple and highly efficient synthesis of penta- and tri-substituted pyrroles has been developed using the Paal-Knorr reaction catalysed by aqueous zinc tetrafluoroborate at room temperature under solvent-free conditions.
HYDROXY AND THIOL DERIVATIVES OF 2,5-DIALKYLPYRROLES