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 an
1H and 13C NMR studies of asymmetrically substituted bis- and tris-Tröger's bases
✍ Scribed by J. Elguero; A. Fruchier; T. Mas; C. Pardo
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 101 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.1619
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✦ Synopsis
The (1)H and (13)C NMR spectra of two stereoisomeric bis-Tröger's bases and four stereoisomeric tris-Tröger's bases asymmetrically substituted on the external aromatic rings were recorded and the corresponding signals assigned. The relative configuration of the stereogenic units has been unequivocally determined on the basis of homoallylic couplings and NOE experiments.
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