[OH:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]=[CH:9][C:10]([C:12]2[CH:17]=[CH:16][C:15]([OH:18])=[CH:14][CH:13]=2)=[O:11])=[CH:4][C:3]=1[O:19][CH3:20].O>O1CCCC1.[Pd]>[OH:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][CH2:9][C:10]([C:12]2[CH:17]=[CH:16][C:15]([OH:18])=[CH:14][CH:13]=2)=[O:11])=[CH:4][C:3]=1[O:19][CH3:20]10 g of 3-(4-hydroxy-3-methoxyphenyl)-1-(4-hydroxyphenyl)-2-propen-1-one are dissolved in 100 g of tetrahydrofuran, combined with 0.2 g of Pd on activated carbon (Pd content: 5 wt. %, water content approx. 50 wt. %, in each case relative to the total mass of the catalyst) and hydrogenated at standard pressure and room temperature (approx. 20° C.) After removal of the catalyst and the solvent, 9 g of 3-(4-hydroxy-3-methoxyphenyl)-1-(4-hydroxyphenyl)-propan-1-one are obtained. Yield: 89% of theoretical
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