trichlorophosphate in 1,2-dichloro-ethane T=0 - 5°C;

1: 96 percent / NH4Cl / 2 h / 20 - 100 Torr / Heating 2: 1.) POCl3, 2.) AcONa / 1.) ethylene dichloride, 0-5 deg C, 1 h -> reflux, 15 min, 2.) H2O, reflux, 15 min View Scheme

1: anodic oxidation in tetraethylammonium p-toluenesulfonate 2: 96 percent / NH4Cl / 2 h / 20 - 100 Torr / Heating 3: 1.) POCl3, 2.) AcONa / 1.) ethylene dichloride, 0-5 deg C, 1 h -> reflux, 15 min, 2.) H2O, reflux, 15 min View Scheme