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1H and 13C NMR identification of unexpected 3,4-dihydroquinoxalines in the syntheses of 1,5-benzodiazepine derivatives

✍ Scribed by E. M. Tjiou; E. G. Lhoussaine; D. Virieux; A. Fruchier

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
141 KB
Volume
43
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The reaction between o‐phenylenediamines, dehydroacetic acid and aromatic aldehydes is shown to give not only the expected 1,5‐benzodiazepine derivative but also a 3,4‐dihydroquinoxaline, the structure of which was determined by its ^1^H and ^13^C 1D and 2D NMR spectra. Copyright © 2005 John Wiley & Sons, Ltd.

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