Rotational isomerism in 1-vinylpyrazoles and 1-vinylimidazoles from 1H and 13C NMR data and quantum-chemical calculations

Autor:	A. V. Afonin, L. A. Es'kova, V. K. Voronov, L. V. Baikalova, David Danovich, E. S. Domina
Rok vydání:	1990
Předmět:	Quantum chemical Computational chemistry Chemistry Organic Chemistry Carbon-13 NMR
Zdroj:	Chemistry of Heterocyclic Compounds. 26:1121-1125
ISSN:	1573-8353 0009-3122
Popis:	A quantitative evaluation of the percentages of rotational isomers of 1-vinylpyrazoles and 1-vinylimidazoles was made on the basis of an analysis of the 1H and 13C NMR spectral parameters and quantum-chemical calculations. It is shown that the populations of the s-cis-(N(2), N(3)) and s-trans-(N(2), N(3)) forms in both the 1-vinylpyrazole and in the 1-vinylimidazole are approximately equal.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::38f9f8834dce50190a95e2a3cc8cbd46 https://doi.org/10.1007/bf00472182 Zobrazit plný text záznamu Full text from SpringerLink