Chemistry of Heterocyclic Compounds p. 863 - 866 (1991)
Update date:2022-08-03
Topics:
Afonin, A. V.
Andriyankov, M. A.
Nikitin, M. V.
Garashchenko, Z. M.
Khil'ko, M. Ya
A weak hydrogen bond with the participation of the vinyl group α-hydrogen atom arises in 2-vinyloxypyridine and 2-vinylthiopyridine, which primarily exist in the s-trans-conformation, according to the 1H and 13C NMR data.This interaction does not take place in 2-vinyloxymethyl- and 2-vinyloxyethylpyridines, which primarily exist in the s-cis-conformation.The C-H...N intramolecular interaction also does not occur in o-vinyloxyaniline due to the specific features of the stereoelectronic state of the amino group nitrogen atom.
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