A facile and efficient synthesis of polysubstituted benzenes has been developed via sequential Michael addition, Knoevenagel condensation and nucleophilic cyclization reactions of readily available chalcones with active methylene compounds in guanidinium ionic liquids.
AbstractCeO2 nanoparticles as an efficientcatalyst have been used for the preparation of 2-amino-4,6-diarylbenzene-1,3-dicarbonitriles by the multi-component condensation reaction of aldehydes, acetophenones, and malononitrile in good to excellent yields, short reaction times, mild reaction conditions, and the employment of a cost-effective catalyst. Graphical abstract