The First Report on the Synthesis of New Hantzsch N-Ethyldimetyl Acetal-1,4-dihydropyridines with Aldehyde Synthon under Microwave Irradiation

A mixture of ethyl acethylenecarboxylate, various aryl aldehydes and aminoacetaldehyde dimethyl acetal in the presence of silica gel were converted to N-ethyldimethyl acetal-1,4-dihydropyridines using microwave irradiation with good yields.