Deep eutectic solvent based on choline chloride and malonic acid as an efficient and reusable catalytic system for one-pot synthesis of functionalized pyrroles

Deep eutectic solvent (DES) based on choline chloride and malonic acid was applied as catalyst and reaction medium for synthesis of pyrroles by one-pot, four-component reaction of amines, aldehydes, 1,3-dicarbonyl compounds and nitromethane.