trichlorophosphate in benzene 15 h; Ambient temperature;

1: 70 percent / Cu2O, pyridine / 168 h 2: 60 percent / sodium, NH3 / 1 h / -60 °C 3: 90 percent / POCl3 / benzene / 15 h / Ambient temperature View Scheme

1: 60 percent / sodium, NH3 / 1 h / -60 °C 2: 90 percent / POCl3 / benzene / 15 h / Ambient temperature View Scheme