1-Methyl-2(3,4)-(1-vinylpyrrol-2-yl)pyridinium iodides: some structural features revealed by 1H and 13C NMR spectroscopy |
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| Authors: | Afonin A V Kuznetsova S Yu Ushakov I A Petrova O V Voronov V K Mikhaleva A I |
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| Institution: | (1) A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 ul. Favorskogo, 664033 Irkutsk, Russian Federation;(2) Irkutsk State Technical University, 83 ul. Lermontova, 664074 Irkutsk, Russian Federation |
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| Abstract: | The reactions of 2-, 3-, and 4-(1-vinylpyrrol-2-yl)pyridines with methyl iodide afford the corresponding quaternary salts. Analysis of their 1H and 13C NMR spectra showed that the quaternization of the nitrogen atom considerably enhances the  -acceptor effect of the pyridine ring on the pyrrole ring and on the vinyl group. 1-Methyl-2-(1-vinylpyrrol-2-yl)pyridinium iodide contains no weak intramolecular C--H...N hydrogen bond present in the starting compound. |
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| Keywords: | (1-vinylpyrrol-2-yl)pyridines quaternization 1-methyl-(1-vinylpyrrol-2-yl)pyridinium iodides 1H NMR spectra 13C NMR spectra |
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