Étude de l'effet de solvant en résonance magnétique nucléaire-I. Caféine et dérivés

The NMR spectrum of caffein shows three NCH3 peaks. By study of solvent effect and pH effect on this spectrum, it was possible to make a correct attribution of the absorption peaks. A proof of this attribution was searched in the examination of NMR spectra of theophylline and theobromine. Two new chlorocaffeins were prepared during this work. © 1965.SCOPUS: ar.jinfo:eu-repo/semantics/publishe