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13 C NMR spectra of 1,4,5,8‐tetraazaphenanthrene derivatives
Author(s) -
Defay N.,
Maetens D.,
NasielskiHinkens R.
Publication year - 1984
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270220513
Subject(s) - quinoxaline , substituent , chemical shift , spectral line , chemistry , proton , nmr spectra database , decoupling (probability) , carbon 13 nmr , proton nmr , stereochemistry , computational chemistry , medicinal chemistry , physics , organic chemistry , nuclear physics , astronomy , control engineering , engineering
The 13 C NMR spectra of 1,4,5,8‐tetraazaphenanthrene (pyrazino[2,3‐ f ] quinoxaline), eleven of its derivatives [2‐ and 3‐chloro, ‐methoxy and ‐(1′‐piperidino), 2,3‐dichloro, ‐dimethoxy, ‐dimethyl and ‐di(1′‐piperidino) and 9‐methoxy] and of 1,4,5,8,9,12‐hexaazatriphenylene (dipyrazino[2,3‐ f : 2′,3′‐ h ]quinoxaline) have been assigned by { 1 H} selective decoupling experiments, correlations and additivities of substituent‐induced chemical shifts and proton–carbon coupling patterns. Assignments of proton spectra are extended.