[CH3:1][C:2]12[CH:12]=[CH:11][CH:5]([CH:6]=[C:7]1[CH2:8][CH2:9][OH:10])[C:4]([CH3:14])([CH3:13])[C:3]2=[O:15].[H][H]>[Pd].C(O)(C)C>[CH3:1][C:2]12[CH2:12][CH2:11][CH:5]([CH2:6][CH:7]1[CH2:8][CH2:9][OH:10])[C:4]([CH3:14])([CH3:13])[C:3]2=[O:15]An autoclave is charged with 26.8 grams of 1,3,3-trimethyl-6-(2-hydroxyethyl)bicyclo(2.2.2)-octa-5,7-dien-2-one prepared according to the process of Example XVI, 2 grams 5% palladium/carbon catalyst, and 300 ml isopropyl alcohol. The autoclave is then sealed and pressurized with hydrogen to 400 psig, heated to 150° C. and maintained at that temperature, with stirring, for a period of 48 hours. At the end of this period of time, the autoclave is opened and the reaction mass is removed. The reaction mass is filtered, and the excess isopropyl alcohol is stripped therefrom. The reaction product (the title product) is distilled at 64°-65° C. at a pressure of 0.2 mm Hg (yield: 12.3 g). Its structure, confirmed by NMR and mass spectral analyses is as follows: ##STR36##
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