[CH3:1][O:2][CH:3]([O:19][CH3:20])[C@@H:4]1[CH2:8][CH2:7][CH2:6][N:5]1C(OCC1C=CC=CC=1)=O>CCO.[Ni]>[CH3:1][O:2][CH:3]([O:19][CH3:20])[CH:4]1[CH2:8][CH2:7][CH2:6][NH:5]1A solution of acetal 15 (5.8 9, 0.02 mol) in EtOH (50 mL) was allowed to stir for 16 hours at room temperature over Raney nickel (0.2 g), in order to remove the trace amounts of sulphur impurities prior to hydrogenation. Excess nickel was removed by filtration through Celite.
불러오는 중…