1: With sulfuric acid; sodium nitrite in acetic acid T=0°C; Diazotization; 0.333333 h; 2: With sulfuric acid; water; urea Hydrolysis; 0.166667 h; Heating; Further stages.;

1.1: 63 percent / KOH; CuCl / dimethylsulfoxide / 16 h / 20 °C 2.1: 94 percent / H2 / Pd/C / ethyl acetate / 20 °C / 2280.15 Torr 3.1: aq. NaNO2; H2SO4 / acetic acid / 0.33 h / 0 °C 3.2: 10 percent / urea; H2O; H2SO4 / 0.17 h / Heating View Scheme

1.1: 94 percent / H2 / Pd/C / ethyl acetate / 20 °C / 2280.15 Torr 2.1: aq. NaNO2; H2SO4 / acetic acid / 0.33 h / 0 °C 2.2: 10 percent / urea; H2O; H2SO4 / 0.17 h / Heating View Scheme

1.1: 63 percent / KOH; CuCl / dimethylsulfoxide / 16 h / 20 °C 2.1: 94 percent / H2 / Pd/C / ethyl acetate / 20 °C / 2280.15 Torr 3.1: aq. NaNO2; H2SO4 / acetic acid / 0.33 h / 0 °C 3.2: 10 percent / urea; H2O; H2SO4 / 0.17 h / Heating View Scheme