1: 5.2 g / phosphorous oxychloride / 24 h / 90 °C 2: 85 percent / Cl2 / acetonitrile; H2O 3: 95 percent / methanol / 0.5 h 4: 3.75 g / sodium acetate hydrate, hydrogen / 10percent Pd/C / acetonitrile; H2O / 0.5 h / 2585.7 Torr View Scheme