A straightforward highly efficient Paal–Knorr synthesis of pyrroles
作者:Bimal K. Banik、Indrani Banik、Mercy Renteria、Swapan K. Dasgupta
DOI:10.1016/j.tetlet.2005.02.103
日期:2005.4
A straightforward simple synthesis of substituted pyrroles using bismuth nitrate-catalyzed modified Paal–Knorr method has been accomplished with an excellent yield. This method produces pyrroles with multicyclic aromatic amines.
Simple Synthesis of Pyrroles Under Solvent-Free Conditions
作者:Surya K. De
DOI:10.1080/00397910701833791
日期:2008.8.19
Paal-Knorr condensation of 2,5-hexadione with primary amines in the presence of a catalytic amount of praseodymium(III) trifluoromethanesulfonate under solvent-free conditions has been accomplished with an excellent yield. This method is a very easy, rapid, and high-yielding reaction for the synthesis of N-substituted pyrrole derivatives.
Simple Synthesis of Substituted Pyrroles
作者:Bimal K. Banik、Susanta Samajdar、Indrani Banik
DOI:10.1021/jo035200i
日期:2004.1.1
Simple synthesis of substituted pyrroles using iodine-catalyzed and montmorillonite KSF-clay-induced modified Paal-Knorr methods has been accomplished with excellent yields. N-Substituted carbazole has also been prepared by following this method. If one of the reactants is a liquid, the reaction proceeds exceedingly well without a solvent. This method gives pyrroles with less nucleophilic multicyclic aromatic amines at room temperature.
Montmorillonite KSF-Mediated Facile Synthesis of Pyrroles
作者:Bimal K. Banik、Susanta Samajdar、Frederick F. Becker