1: 85.3 percent / 50percent aq. KOH / ethanol / 24 h / Ambient temperature 2: thallium nitrate / CHCl3 / Ambient temperature 3: H2, triethylamine / 10percent Pd/C / ethyl acetate / 760 Torr / Ambient temperature 4: 5percent HCl / methanol / 2 h / Heating View Scheme

1: thallium nitrate / CHCl3 / Ambient temperature 2: H2, triethylamine / 10percent Pd/C / ethyl acetate / 760 Torr / Ambient temperature 3: 5percent HCl / methanol / 2 h / Heating View Scheme

potassium carbonate; potassium iodide in 1,4-dioxane 20 h; Heating; Yield given;

potassium carbonate in acetone T=20°C;