[CH2:1]([O:3][C:4](=[O:17])[C:5]([C:14](=[O:16])[CH3:15])=[CH:6][C:7]1[CH:12]=[CH:11][C:10]([OH:13])=[CH:9][CH:8]=1)[CH3:2].[H][H]>[Ni]>[CH2:1]([O:3][C:4](=[O:17])[CH:5]([CH2:6][C:7]1[CH:12]=[CH:11][C:10]([OH:13])=[CH:9][CH:8]=1)[C:14](=[O:16])[CH3:15])[CH3:2]According to the procedure of Liebigs Ann. Chem. (1980), 9, 1392, 2-(4-hydroxy-benzyl)-3-oxo-butyric acid ethyl ester was prepared from 2-acetyl-3-(4-hydroxy-phenyl)-acrylic acid ethyl ester, Raney-nickel, hydrogen.
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