caa a22 4500 46799224X CHVBK 20180323112547.0 cr unu---uuuuu 170328e19901001xx s 000 0 eng 10.1007/BF00472182 doi (NATIONALLICENCE)springer-10.1007/BF00472182 Rotational isomerism in 1-vinylpyrazoles and 1-vinylimidazoles from 1H and 13C NMR data and quantum-chemical calculations [Elektronische Daten] [A. Afonin, D. Danovich, V. Voronov, L. Es'kova, L. Baikalova, E. Domina] 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. Plenum Publishing Corporation, 1991 Afonin A. Irkutsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 664033, Irkutsk aut Danovich D. Irkutsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 664033, Irkutsk aut Voronov V. Irkutsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 664033, Irkutsk aut Es'kova L. Irkutsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 664033, Irkutsk aut Baikalova L. Irkutsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 664033, Irkutsk aut Domina E. Irkutsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 664033, Irkutsk aut Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/10(1990-10-01), 1121-1125 0009-3122 26:10<1121 1990 26 10593 https://doi.org/10.1007/BF00472182 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00472182 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Afonin A. Irkutsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 664033, Irkutsk aut NATIONALLICENCE 700 1- Danovich D. Irkutsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 664033, Irkutsk aut NATIONALLICENCE 700 1- Voronov V. Irkutsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 664033, Irkutsk aut NATIONALLICENCE 700 1- Es'kova L. Irkutsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 664033, Irkutsk aut NATIONALLICENCE 700 1- Baikalova L. Irkutsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 664033, Irkutsk aut NATIONALLICENCE 700 1- Domina E. Irkutsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 664033, Irkutsk aut NATIONALLICENCE 773 0- Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/10(1990-10-01), 1121-1125 0009-3122 26:10<1121 1990 26 10593 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer