Étude de l'effet de solvant en résonance magnétique nucléaire—I Caféine et dérivés |
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| Authors: | R Ottinger G Boulvin J Reisse and G Chiurdoglu |
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| Institution: | Université Libre de Bruxelles Service de Chimie Organique (Fac. Sc. Appl.) et Laboratoire de Chimie Alicyclique (Fac. Sc.). I.I.F-I.M.C. Céria. Laboratoire de Chimie Organique Appronfondie. France |
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| Abstract: | The NMR spectrum of caffein shows three N---CH3 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. |
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