1-aryl- and 1-benzyl-3,5-diethoxycarbonyl-1,4-dihydropyridines

The possibility has been studied of using anilines in the Hantzsch synthesis. It has been shown that, with the exception of those containing strong electron-accepting substituents, they take part in this reaction with the formation of 1-aryl-1,4-dihydropyridines. The reaction largely depends on the nature of the substituents in the aniline and in the benzaldehyde and is promoted by electron-accepting substituents in the aldehyde and electron-donating substituents in the amine. The mechanism of the reaction is discussed. A number of 1-benzyl-1,4-dihydropyridines have been synthesized. The UV, IR, and PMR spectra and the electro-oxidation of the compounds obtained have been studied.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 493–501, April, 1980.