hydrazine hydrate in methanol T=60°C; 3 h;

1: 88 percent / Fe / ethanol; H2O; acetic acid / 2 h / Heating 2: 97 percent / CHCl3 / 8 h / Heating 3: 99 percent / 18percent N2H4 / methanol / 3 h / 60 °C View Scheme

1: 94 percent / dimethylsulfoxide / 2 h / 40 - 50 °C 2: 54 percent / 79percent KOH / benzene; methanol / 1.) 25-30 deg C, 2.5 h, 2.) R.T., 3 h. 3: 88 percent / Fe / ethanol; H2O; acetic acid / 2 h / Heating 4: 97 percent / CHCl3 / 8 h / Heating 5: 99 percent / 18percent N2H4 / methanol / 3 h / 60 °C View Scheme

1: 97 percent / CHCl3 / 8 h / Heating 2: 99 percent / 18percent N2H4 / methanol / 3 h / 60 °C View Scheme

1: 54 percent / 79percent KOH / benzene; methanol / 1.) 25-30 deg C, 2.5 h, 2.) R.T., 3 h. 2: 88 percent / Fe / ethanol; H2O; acetic acid / 2 h / Heating 3: 97 percent / CHCl3 / 8 h / Heating 4: 99 percent / 18percent N2H4 / methanol / 3 h / 60 °C View Scheme