13C-13C spin-spin coupling constants in six-membered ring azaaromatic compounds Научная публикация
| Журнал |
Chemistry of Heterocyclic Compounds
ISSN: 0009-3122 , E-ISSN: 1573-8353 |
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| Вых. Данные | Год: 1988, Том: 24, Номер: 9, Страницы: 1027-1034 Страниц : DOI: 10.1007/BF00474049 | ||
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Реферат:
The 13C-{1H} NMR spectra of monomethyl substituted diazines, protonated at the picoline and 2-methylopyrimidine nitrogen atoms, have been analyzed, along with that of pyridine N-oxide and its 2-methyl derivatives protonated at the oxygen atom. Direct and vicinal 13C-13C spin-spin coupling constants (SSCC) have been measured. It was found that the 13C-13C SSCC in diazines follow additivity rules which are based on consideration of the number and mutual orientation or distribution of nitrogen atoms in the ring. It has also been demonstrated that increased direct 1JCC values involving methyl group carbon atoms in α-positions to nitrogen atoms in the aromatic ring are due to effects associated with unshared electron pairs. © 1989 Plenum Publishing Corporation.
Библиографическая ссылка:
Denisov A.Y.
, Mamatyuk V.I.
, Shkurko O.P.
13C-13C spin-spin coupling constants in six-membered ring azaaromatic compounds
Chemistry of Heterocyclic Compounds. 1988. V.24. N9. P.1027-1034. DOI: 10.1007/BF00474049 Scopus РИНЦ
13C-13C spin-spin coupling constants in six-membered ring azaaromatic compounds
Chemistry of Heterocyclic Compounds. 1988. V.24. N9. P.1027-1034. DOI: 10.1007/BF00474049 Scopus РИНЦ
Даты:
| Опубликована в печати: | 1 сент. 1988 г. |
Идентификаторы:
| Scopus | 2-s2.0-34249964943 |
| РИНЦ | 30987169 |
| OpenAlex | W2053055173 |