1: 90 percent / NaBO3 / acetic acid / 5.5 h / 80 °C 2: 15 percent / POCl3 / 1 h / Heating View Scheme

1: 90 percent / Pd(PPh3)4 / dioxane; hexane / 5.5 h / Heating 2: 90 percent / NaBO3 / acetic acid / 5.5 h / 80 °C 3: 15 percent / POCl3 / 1 h / Heating View Scheme

1: 90 percent / POCl3, PCl5 / 1 h / 140 °C 2: 90 percent / Pd(PPh3)4 / dioxane; hexane / 5.5 h / Heating 3: 90 percent / NaBO3 / acetic acid / 5.5 h / 80 °C 4: 15 percent / POCl3 / 1 h / Heating View Scheme

trichlorophosphate 1 h; Heating; Title compound not separated from byproducts;