1: 84.1 percent / hydrogen / 10percent Pd-C / acetic acid / Ambient temperature 2: 1.) 6 N HCl, NaNO2; 2.) NaN3 / 1.) -5 deg C, 1 h; 2.) H2O, r.t. 3: 77 percent / o-dichlorobenzene / 1 h / 160 - 170 °C 4: 88 percent / 10percent aq. NaOH / ethanol / 1 h / Heating 5: 76 percent / SOCl2 / benzene / 0.5 h / Heating View Scheme