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

Tjiou E. M. | Zendy; Lhoussaine E. G. | Zendy; Virieux D. | Zendy; Fruchier A. | Zendy

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

Author(s) -

Tjiou E. M.,

Lhoussaine E. G.,

Virieux D.,

Fruchier A.

Publication year - 2005

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.1593

Subject(s) - chemistry , benzodiazepine , dehydroacetic acid , carbon 13 nmr , derivative (finance) , nmr spectra database , stereochemistry , medicinal chemistry , spectral line , organic chemistry , biochemistry , physics , receptor , astronomy , financial economics , economics

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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