The NMR spectrum of phenol, dissolved in a nematic solvent, is explainable in terms of two averaging planar structures for each of which the principle axis of orientation in the ring is on the opposite side of the oxygen atom from the hydroxyl proton. External hydrogen bonding to the solvent seems t
Structural determination by NMR spectroscopy and molecular mechanics of the regio and diastereoisomers obtained in the addition of 2-phenylcyclohexanone to chalcone
✍ Scribed by A. de la Hoz; E. Díez-Barra; F. Langa; S. Merino; A. Rodríguez; P. Sánchez-Verdú
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 798 KB
- Volume
- 53
- Category
- Article
- ISSN
- 0040-4020
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✦ Synopsis
The structure and stereochemistry of the six regio and stereoisomers obtained in the reaction of 2-Phenylcyclohexanone 1 with chalcone 2 by solvent-free phase transfer catalysis has been determined by a combination of NMR techniques and molecular mechanics calculations. The validity of the method has been confirmed by the X-ray structure determination of isomer 7.
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