sodium hydroxide; silver nitrate in ethanol T=0°C; 0.5 h;

1.1: 2,2,2-trichloroethyl chloroformate / toluene / 2 h / Heating 1.2: 11 percent / aq. KH2PO4; Zn / tetrahydrofuran / 2 h / Heating 2.1: sodium iodide / acetone / Heating 3.1: dimethyl sulfoxide; sodium hydrogen carbonate / 0.33 h / 120 °C 4.1: 36 percent / aq. silver nitrate; aq. sodium hydroxide / ethanol / 0.5 h / 0 °C View Scheme

1: sodium iodide / acetone / Heating 2: dimethyl sulfoxide; sodium hydrogen carbonate / 0.33 h / 120 °C 3: 36 percent / aq. silver nitrate; aq. sodium hydroxide / ethanol / 0.5 h / 0 °C View Scheme

1: K2CO3 / ethanol / 4 h / Heating 2: 8.1 g / ethyl chloroformate / toluene / 2 h / Heating 3: sodium iodide / acetone / Heating 4: dimethyl sulfoxide; sodium hydrogen carbonate / 0.33 h / 120 °C 5: 36 percent / aq. silver nitrate; aq. sodium hydroxide / ethanol / 0.5 h / 0 °C View Scheme