The one pot synthesis of dihydropyridine derivatives (1a-e) were synthesized in good yields by the Hantzsch reaction of different aryl hetero cyclic aldehydes (2a-e) with acetoacetic ester 3 and ammonium acetate 4 in presence of organocatalysts, guanidine hydrochloride. The present work describes the synthesis and characterization of novel dihydropyridine derivatives (1a-e) first time with spectral data (1H-NMR, 13C-NMR, IR and MS).
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