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Assignments of the 1 H and 13 C NMR spectra of 1,4‐diazaphenanthrene (benzo[ f ]quinoxaline) derivatives
Author(s) -
Defay N.,
NasielskiHinkens R.,
Nasielski J.
Publication year - 1987
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260250121
Subject(s) - chemistry , quinoxaline , nmr spectra database , chlorine , chlorine atom , spectral line , coupling constant , medicinal chemistry , chemical shift , stereochemistry , computational chemistry , crystallography , organic chemistry , physics , particle physics , astronomy
The 1 H and 13 C NMR spectra of 1,4‐diazaphenanthrene (benzol f quinoxaline) (1) and some of its derivatives have been fully assigned and most of the coupling constants have been measured. The compounds examined bear a piperidino or methoxy group at the 2‐ or 3‐position, or a chlorine atom at the 2‐, 3‐ or 9‐position. The spectra of the N ‐1‐oxides of 1 and of 1,4,5,8‐tetraazaphenanthrene are also given. The syntheses are described.