1: 42 percent / toluene / 3.5 h / Heating 2: sodium borohydride / propan-2-ol / 21.5 h / Heating 3: 1.) phosphorus oxychloride / 1.) RT, 6 h, 2.) CH2Cl2, 18 h View Scheme

1: sodium borohydride / propan-2-ol / 21.5 h / Heating 2: 1.) phosphorus oxychloride / 1.) RT, 6 h, 2.) CH2Cl2, 18 h View Scheme

1: CH2Cl2 / 2 h / 0 °C 2: 1.) phosphorus oxychloride / 1.) RT, 6 h, 2.) CH2Cl2, 18 h View Scheme

trichlorophosphate 1.) RT, 6 h, 2.) CH2Cl2, 18 h; Yield given. Multistep reaction;