STRUCTURE AND PROPERTIES OF QUATERNIZED 2-AMINONICOTINAMIDES AND 4-AMINONICOTINAMIDES

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