Collection of Czechoslovak Chemical Communications - digital archive 

Abstract

Compounds 2- and 4-aminonicotinamide were quaternized with eight 4-substituted 1-bromomethylbenzenes to form 1-(4-substituted benzyl)-3-carbamoyl-1,2(1,4)-dihydropyridin-2(4)-iminium bromides. The optimal reaction conditions were found and the resulting iminium salts were characterized by ¹H and ¹³C NMR spectra. No transmission of electronic effect of the substituent at the benzene ring on the spectral properties of dihydropyridine moiety was observed. The possible reason is discussed.