1: ethanol / 5 h / Heating 2: H2, HCl / 5percent Pd/C / aq. ethanol / 2327.2 Torr 3: HCl / ethanol / 1.) 25 deg C, 5 h, 2.) reflux, 1.5 h 4: MnO2, 5 M NaOH / H2O / 0.83 h / pH 6 View Scheme

1: ethanol / 5 h / Heating 2: H2, HCl / 5percent Pd/C / aq. ethanol / 2327.2 Torr 3: HCl / ethanol / 1.) 25 deg C, 5 h, 2.) reflux, 1.5 h 4: MnO2, 5 M NaOH / H2O / 0.83 h / pH 6 View Scheme