The 'H and I3C NMR spectra of an asymmetric Troger's base were recorded and the corresponding signals assigned on the basis of long-range coupling constants and 'H-13C correlations. In 1H NMR, ambiguities in the assignment of e m and endo hydrogen atoms and in the long-range couplings between the me
1H and13C NMR Studies of Heterocyclically Modified Tröger's Bases
✍ Scribed by J. Cudero; P. Jiménez; C. Marcos; C. Pardo; M. Ramos; J. Elguero; A. Fruchier
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 284 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
The ' H and '% NMR spectra of 15 modified representatives of Troger's base were recorded and the corresponding signals assigned. In 'H NMR, the appearance of the AABB'CC'(XX) system, after irradiation of H,(H,), is deceptively simple and should not be first-order analysed. The 13C chemical shifts and 'J('H-'%) coupling constants are characteristic of these molecules.
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