1: With sulfuric acid; sodium nitrite in water T=0 - 10°C; 0.333333 h; 2: With urea in water T=0 - 10°C; 0.333333 h; 3: With copper(II) sulfate in water T=130°C; 3.75 h;

hydrogen; Rh/Al2O3 in ethyl acetate

1: 78.8 percent / 1 h / 110 °C 2: 47.3 percent / diphenyl ether / 1 h / Heating 3: 74.2 percent / potassium carbonate / dimethylformamide / 7 h / 70 °C 4: 51.3 percent / 2N NaOH / 2 h / Heating View Scheme

1: 78.8 percent / 1 h / 110 °C 2: 47.3 percent / diphenyl ether / 1 h / Heating 3: 74.2 percent / potassium carbonate / dimethylformamide / 7 h / 70 °C 4: 51.3 percent / 2N NaOH / 2 h / Heating 5: acetic acid / 0.5 h / 140 °C View Scheme