[CH2:1]([C:4]1([CH2:11][CH2:12][CH3:13])[CH2:9][CH2:8][C:7](=[O:10])[CH:6]=[CH:5]1)[CH2:2][CH3:3].[H][H]>[Pd].C(OCC)(=O)C>[CH2:11]([C:4]1([CH2:1][CH2:2][CH3:3])[CH2:5][CH2:6][C:7](=[O:10])[CH2:8][CH2:9]1)[CH2:12][CH3:13]To a suspension of 10% palladium on carbon (0.1 equivalents) in ethyl acetate was added 4,4 dipropylcyclohex-2-enone, prepared as described in Example 3. The reaction mixture was hydrogenated at 300N/m2 hydrogen in a Parr hydrogenation apparatus at room temperature until hydrogen uptake has ceased (0.5-5 hours). The catalyst was removed by filtration through celite and the filtrate was concentrated to give the desired product as a colorless oil. The product was used without further purification. Yield 98%.
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