Solvent-free Synthesis of Dihydropyridines and Acridinediones via a Salicylic Acid Catalyzed Hantzsch Multicomponent
Abstract
A multicomponent Hantzsch synthesis of 1,4-dihydropyridines and acridinediones from commercially available aldehydes, ammonium acetate, and ethyl acetoacetate or dimedone, in the presence of salicylic acid as an efficient catalyst, in good yield and short reaction time is reported.