1: 84 percent 2: 46 percent / AcONa / acetic anhydride / Heating View Scheme

iron(III) chloride; carbon; hydrazine in methanol; benzene 7 h; Heating;

1: 56 percent / KOH / ethanol / 7 h / Heating 2: 86 percent / CH3ONa / ethanol / 0.33 h / Heating 3: 81 percent / active carbon, FeCl3*6H2O, hydrazine / benzene; methanol / 7 h / Heating View Scheme

1: 86 percent / CH3ONa / ethanol / 0.33 h / Heating 2: 81 percent / active carbon, FeCl3*6H2O, hydrazine / benzene; methanol / 7 h / Heating View Scheme

1: 56 percent / KOH / ethanol / 7 h / Heating 2: 86 percent / CH3ONa / ethanol / 0.33 h / Heating 3: 81 percent / active carbon, FeCl3*6H2O, hydrazine / benzene; methanol / 7 h / Heating View Scheme

1: 65 percent / AlCl3 / CHCl3 / 0.17 h / Ambient temperature 2: 56 percent / KOH / ethanol / 7 h / Heating 3: 86 percent / CH3ONa / ethanol / 0.33 h / Heating 4: 81 percent / active carbon, FeCl3*6H2O, hydrazine / benzene; methanol / 7 h / Heating View Scheme