Specific intramolecular C-H...O interactions in 1-vinyl-2-formylimidazole and 1-vinyl-2-formylbenzimidazole studied by1H and13C NMR spectral data
作者:A. V. Afonin、L. V. Baikalova、E. S. Domnina
DOI:10.1007/bf01431606
日期:1996.5
According to the H-1 and C-13 NMR spectral data, the vinyl group in 1-vinyl-2-formylimidazole and 1-vinyl-2-formylbenzimidazole is trans-oriented with respect to the formyl fragment, while the carbonyl group occupies the anti-position with respect to the N atom of pyridine cycle. A specific intramolecular C-H...O interaction of a weak hydrogen bond type is realized between the alpha-H atom of the vinyl group and O atom of the carbonyl group.