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Intramolecular Hydrogen Bond and Internal Rotation of Aminogroup in Esters of Aminoacrylic Acids |
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| Authors: | H A Hartman G S Denisov N M Kolbina P H Neufeld Y V Ulashkevich |
| Institution: | 1. Dept. of Chemistry , Perm State University , Perm, USSR;2. Inst. of Physics , Leningrad State University , Leningrad, 198904, USSR |
| Abstract: | The NMR 1H and IR spectra of ethyl esters of two β-alkyl and β-aryl substituted of β-aminoacrylic acid have been measured. The results are evidence of the strong intramolecular hydrogen bond between amino group and carbonyl oxygen. The activation energy of about 20 kcal/mol was obtained for the internal rotation around C-N bond. |
| Keywords: | NMR 1H IR spectroscopy intramolecular hydrogen bond internal rotation |