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13C NMR spectra of 1,4,5,8-tetraazaphenanthrene derivatives

✍ Scribed by N. Defay; D. Maetens; R. Nasielski-Hinkens

Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
443 KB
Volume
22
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

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.

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