triethylamine; trichlorophosphate in dichloromethane 1 h; Ambient temperature;

1: 32 percent / NaH (65percent in oil) / tetrahydrofuran / 1) 30 to 35 deg C, 2) RT, 2 h 2: 98 percent / phosphoryl chloride, triethylamine / CH2Cl2 / 1 h / Ambient temperature View Scheme

1: sodium hydride / mineral oil; tetrahydrofuran / 2 h / 20 °C 2: triethylamine; trichlorophosphate / tetrahydrofuran / 2 h / 0 °C / |Inert atmosphere View Scheme