| Titre : | Some aspects of NMR spectroscopy |
| Auteurs : | Laidoudi Bouakkar, Auteur ; R. Fields, Directeur de thèse |
| Type de document : | texte imprimé |
| Editeur : | Manchester : [s.n.], 1988 |
| Format : | 94 f. / ill. / 30 cm. |
| Note générale : |
Mémoire de Master : Chemical engineering : University of Manchester : 1988
Mémoire de Master en Génie Chimique Bibliogr. f. 90-94 |
| Langues : | Anglais |
| Index. décimale : | Ms00388 |
| Tags : | Nuclear magnetic resonance spectroscopy Organic chemistry Chemical shifts Coupling constants |
| Résumé : |
This thesis is concerned with the application of NMR spectroscopy to solving problems in organic chemistry. The structure of several tetrafluoropyridines and pentafluorobenzenes was verified, combining the information from ¹⁹F, ¹³C and ¹H spectra. The spectral parameters (chemical shifts and coupling constants) were, when possible, correlated with the character of the substituent. The coupling constants derived from the analysis of the ¹³C and ¹⁹F spectra were used for computer calculation of these spectra. Appropriate decoupling experiments were carried out when the assignment of the chemical shifts or coupling constants was uncertain. Finally, a specific application, the differentiation between the enantiomers of racemic mixtures, using a chiral solvating agent (CSA) was examined. The mixtures for which the experiments were successful were racemic 2,2,2-trifluoro-l-phenylethanol (TFPE), 2-phenylpropionic acid and 2-pentafluorophenylbutyric acid in resolved (ℓ)-α-phenylethylamine (PEA). The enantiomeric shift was also observed for racemic PEA in resolved phenylpropionic acid. In conjunction with these CSA experiments a small amount of racemic TFPE was prepared and an attempt was made to prepare 2,2,2-trifluoro-l-phenylethylamine by an improved route. |
Exemplaires (1)
| Cote | Support | Localisation | Section | Disponibilité | Spécialité | Etat_Exemplaire |
|---|---|---|---|---|---|---|
| Ms00388 | Papier + ressource électronique | Bibliothèque Annexe | Mémoire de Master | Disponible | Genie_chimique | Consultation sur place/Téléchargeable |
Documents numériques (1)
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BOUAKKAR.Laidoudi.pdf URL
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