1: 81 percent / zinc, acetic acid / methanol / 17 h / 25 °C 2: 76 percent / platinum oxide, NaNO2, H2 / ethanol / 2.5 h / 2068.6 Torr 3: 49 percent / lead tetraacetate, CaCO3, I2 / benzene / 2.5 h / Heating 4: 81 percent / KOH / propan-2-ol; H2O / 18 h / Heating View Scheme

Multi-step reaction with 3 steps 1: 81 percent / zinc, acetic acid / methanol / 17 h / 25 °C2: 76 percent / platinum oxide, NaNO2, H2 / ethanol / 2.5 h / 2068.6 Torr3: 49 percent / lead tetraacetate, CaCO3, I2 / benzene / 2.5 h / Heating  

Multi-step reaction with 2 steps 1: 50 percent / aq. KOH / ethanol; H2O / 70 h / 25 °C2: 48 percent / iodosobenzene diacetate, CaCO3, I2 / benzene / 2.5 h / Heating  

Multi-step reaction with 2 steps 1: 81 percent / zinc, acetic acid / methanol / 17 h / 25 °C2: 76 percent / platinum oxide, NaNO2, H2 / ethanol / 2.5 h / 2068.6 Torr  

Multi-step reaction with 2 steps 1: 81 percent / zinc, acetic acid / methanol / 17 h / 25 °C2: 87 percent / vanadium(IV)-bis(2,4-pentanedionate) oxide, t-butyl hydroperoxide / CH2Cl2 / Heating; 1.) reflux, 2 h; 2.) 25 deg C, 1.5 h