[C:1]1([CH2:7][CH2:8][CH:9]=[CH:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][OH:18])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1>C(O)C.[Pd]>[C:1]1([CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][OH:18])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1A solution of 11-phenyl-8-undecenol (Example 29(c), 2.9 g) in ethanol (300 ml) was hydrogenated at 60 p.s.i. over 10% palladium on charcoal (0.6 g) for 1 hour. The catalyst was filtered off and the filtrate was evaporated to give the title compound as a colourless oil.
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