Methods based on a ring-contraction of cyclic αβ-epoxy-ketones to give α-hydroxy-acids are used for the preparation of some 8-methyl-trans-perhydroindanone derivatives of possible interest in connection with the synthesis of 9,10-seco-steroids. They include the unsaturated ketones (10) and (22), and the hydroxy-ketones (14), (21), (46), and (49).
T. M. Dawson, P. S. Littlewood, B. Lythgoe, T. Medcalfe, M. W. Moon and P. M. Tomkins, J. Chem. Soc. C, 1971, 1292 DOI: 10.1039/J39710001292
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