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Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

C.M.R. spectra and conformational dynamics of oxygenated cis-10-Methyldecalins

JW Blunt, JM Coxon, NB Lindley and GA Lane

Australian Journal of Chemistry 29(5) 967 - 974
Published: 1976

Abstract

The thermodynamic parameters for equilibration of the chair-chair conformational enantiomorphs of cis-10-methyl-9-decalol (1) and (2) have been determined as EA 69.8 ± 0.9 kJ mol-1, ΔH? 66.7 ± 1.3 kJ mol-1 and ΔS? + 12 ± 5 JK-1 mol-1. For cis-10-methyl-1-decalone, conformer (3) is 1.25 kJ mol-1 more stable at 200 K than conformer (4) with EA 42.9 ± 0.7 kJ mol-1, ΔH? 41 .0 ± 0.7 kJ mol-1 and ΔS? -20 ± 3J K-1 mol-1 for the conversion of (3) + (4. The c.m.r. spectra of these com- pounds, together with those for the coprostan-4-one and coprostan-6-one, have been assigned.

https://doi.org/10.1071/CH9760967

© CSIRO 1976

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