Proton spin-lattice relaxation rates (Rl values) have been measured, at 400 MHz, for a number of 2-methyland 2,2-dimethyl-substituted 4,6-diamino-l-aryl-l,2-dihydro-s-~es. These compounds have high barriers to internal rotation about the aryl C-N bond, and exist in solution as mixtures of enantiomer
One- and two-dimensional nuclear overhauser effect. Investigation of the stereochemistry of 5-functionalized 2-imidazolines
β Scribed by A. Marsura; C. Luu-Duc; R. Nardin
- Publisher
- John Wiley and Sons
- Year
- 1985
- Tongue
- English
- Weight
- 540 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0749-1581
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β¦ Synopsis
The study of 5-f~ctionalized 2-imidazolines by 'β¬I NMR, l -D NOE and 2-D NOE is reported. The application of these methods con6rms the relative configurations and conformations of the compounds. In particular, NOE effects and related crystallographic data are in good agreement with the proposed angular geometry of the N-1 and the ring. Some examples of spectra obtained with the Merent techniques are presented and discussed.
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