hydrogen; palladium 10 on activated carbon in tetrahydrofuran; ethanol

1: diluted NaOH-solution 2: tin dichloride View Scheme

1: 79 percent / H2O / 48 h 2: 1.) aq. H2SO4, 2.) aq. KCl / 1) 4 deg C, 24 h; 2) 50 deg C 3: 97 percent / aq. NaOH / 0.25 h / Ambient temperature; pH 10 4: 8.95 g / Dowex 50W-X2 View Scheme