C([O:8][C:9]1[CH:14]=[CH:13][C:12]([NH:15][CH2:16][CH:17]([O:20][CH3:21])[O:18][CH3:19])=[CH:11][CH:10]=1)C1C=CC=CC=1.[H][H]>C(O)C.[OH-].[Pd+2].[OH-]>[CH3:21][O:20][CH:17]([O:18][CH3:19])[CH2:16][NH:15][C:12]1[CH:13]=[CH:14][C:9]([OH:8])=[CH:10][CH:11]=1Palladium(II) hydroxide (20% on carbon, 0.5 g) was added to a solution of (4-benzyloxyphenyl)-(2,2-dimethoxyethyl)amine (3.5 g) in ethanol (50 mL) under nitrogen. The nitrogen atmosphere was replaced by hydrogen and the mixture was shaken for 3 hours. The catalyst was filtered off and the filtrate was concentrated. The crude product was reacted further without purification.
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