Abstract
The 1H- and 13C-NMR spectral parameters of N-vinyltetrazoles have been analyzed. It has been found that rotational isomerism is inherent to 1- and 2-vinyltetrazoles. A quantitative estimate of the ratio of rotational isomers has been made. In the case of 1-vinyltetrazoles, introduction of a substituent to the 5-position in the tetrazole ring stabilizes the trans-orientation of the vinyl group relative to the substituent, while in the case of 2-vinyltetrazoles the presence of a substituent in the 5-position of the ring essentially does not affect the conformer population.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1662–1667, December, 1989.
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Afonin, A.V., Vereshchagin, L.I., Buzilova, S.R. et al. 1H- and 13C-NMR study of rotational isomerism in N-vinyltetrazoles. Chem Heterocycl Compd 25, 1385–1389 (1989). https://doi.org/10.1007/BF00473869
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DOI: https://doi.org/10.1007/BF00473869