in dichloromethane Ambient temperatureovernight;

1: 83 percent / NaOC2H5 / ethanol / 4 h / Heating 2: 82 percent / iron powder, hydrochloric acid / aq. ethanol / 2 h / Heating 3: triethylamine / CH2Cl2 / Ambient temperature; overnight 4: 98 percent / CH2Cl2 / Ambient temperature; overnight View Scheme

1: triethylamine / CH2Cl2 / Ambient temperature; overnight 2: 98 percent / CH2Cl2 / Ambient temperature; overnight View Scheme

1: 82 percent / iron powder, hydrochloric acid / aq. ethanol / 2 h / Heating 2: triethylamine / CH2Cl2 / Ambient temperature; overnight 3: 98 percent / CH2Cl2 / Ambient temperature; overnight View Scheme

phosphorus pentachloride; triethylamine; trichlorophosphate 1) r.t., 4 h, 2) methylene chloride, r.t., 30 min; Multistep reaction;