In compounds containing a methyl group β to a hydroxy-group, an estimate of the dihedral angle between them can be obtained by measurement of the chemical shift of the methyl group in the solvent pairs dimethyl sulphoxide–pyridine or deuteriochloroform–pyridine; quinoline is also suggested as a solvent for use in such studies.
B. P. Hatton, C. C. Howard and R. A. W. Johnstone, J. Chem. Soc., Chem. Commun., 1973, 744 DOI: 10.1039/C39730000744
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