hydrogenchloride in isopropyl alcohol T=90 - 95°C; 6 h; Yield given;

1: 97 percent / NH4SCN / acetone / 1 h / Ambient temperature 2: K2CO3 / methanol; H2O / 9 h / Heating 3: 20percent HCl / aq. propan-2-ol / 6 h / 90 - 95 °C View Scheme

1: 97 percent / CH2Cl2 / 1 h / Ambient temperature 2: K2CO3 / dimethylformamide / 3 h / Ambient temperature 3: metallic sodium/abs. ethanol / 0.5 h / Ambient temperature 4: 97 percent / NH4SCN / acetone / 1 h / Ambient temperature 5: K2CO3 / methanol; H2O / 9 h / Heating 6: 20percent HCl / aq. propan-2-ol / 6 h / 90 - 95 °C View Scheme

1: K2CO3 / dimethylformamide / 3 h / Ambient temperature 2: metallic sodium/abs. ethanol / 0.5 h / Ambient temperature 3: 97 percent / NH4SCN / acetone / 1 h / Ambient temperature 4: K2CO3 / methanol; H2O / 9 h / Heating 5: 20percent HCl / aq. propan-2-ol / 6 h / 90 - 95 °C View Scheme

1: K2CO3 / methanol; H2O / 9 h / Heating 2: 20percent HCl / aq. propan-2-ol / 6 h / 90 - 95 °C View Scheme