1: ethanol / 5 h / Heating 2: H2 / 5percent Pd/C / aq. ethanol / 2327.2 Torr 3: HCl / ethanol / 1.) 25 deg C, 5 h, 2.) reflux, 1.5 h 4: K3Fe(CN)6, conc. NH4OH / H2O / 0.05 h / pH 8 5: 46 percent / 0.5 h / Heating View Scheme

1: ethanol / 5 h / Heating 2: H2 / 5percent Pd/C / aq. ethanol / 2327.2 Torr 3: HCl / ethanol / 1.) 25 deg C, 5 h, 2.) reflux, 1.5 h 4: K3Fe(CN)6, conc. NH4OH / H2O / 0.05 h / pH 8 5: 46 percent / 0.5 h / Heating View Scheme

0.5 h; Heating;