Journal of Organic Chemistry p. 2680 - 2684 (1980)
Update date:2022-07-30
Topics:
Edgar, Mark T.
Barth, Guenther
Djerassi, Carl
A comparison between the circular dichroism spectra of (4S)-3,3-dideuterio-4-methylcyclohexanone (1), (3R,4R)-3-deuterio-4-tert-butylcyclohexanone (2) and (3S,4R)-3-deuterio-4-tert-butylcyclohexanone (3) leads to the conclusion that the octant contributions of deuterium in the β-equatorial and β-axial positions of the cyclohexanone ring are additive.From the temperature-dependent circular dichroism spectra of 1 an energy difference of -1.1 kcal/mol was obtained for the conformations with the 4-methyl substituent in the axial and equatorial position, respectively.
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Doi:10.1055/s-1980-28949
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