Background: The classical Paal-Knorr reaction is one of the simplest and most economical methods for the synthesis of biologically important and pharmacologically useful pyrrole derivatives.
Results: Polystyrenesulfonate-catalyzed simple synthesis of substituted pyrroles following Paal-Knorr reaction has been accomplished with an excellent yield in aqueous solution. This method also produces pyrroles with multicyclic polyaromatic amines.
Conclusions: The present procedure for the synthesis of N-polyaromatic substituted pyrroles will find application in the synthesis of potent biologically active molecules.
Banik, M., Ramirez, B., Reddy, A. et al. Polystyrenesulfonate-catalyzed synthesis of novel pyrroles through Paal-Knorr reaction. Org Med Chem Lett 2, 11 (2012). https://doi.org/10.1186/2191-2858-2-11
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Organic and Medicinal Chemistry Letters