in ethanol Ambient temperature;

1: 71 percent / stannous chloride, conc. HCl / 1 h / 65 - 70 °C 2: 79 percent / ethanol / Ambient temperature View Scheme

1: 81 percent / sodium acetate, iodine monochloride / acetic acid / 0.5 h / Heating 2: 71 percent / stannous chloride, conc. HCl / 1 h / 65 - 70 °C 3: 79 percent / ethanol / Ambient temperature View Scheme