bromine in acetic acid 1 h; Ambient temperature;

1: 70 percent / Br2, NaOAc / acetic acid / 1 h / Ambient temperature 2: 40 percent / H2O; dimethylformamide / 2 h / 20 - 25 °C 3: 20 percent / HCl / aq. HCl / 5 h View Scheme

1: 20 percent / K2CO3 / bromure de tetra n-butylammonium / dimethylformamide 2: 80 percent / Br2, NaOAc / acetic acid / 1 h / Ambient temperature 3: 50 percent / H2O; dimethylformamide / 2 h / 20 - 25 °C 4: 30 percent / HCl / aq. HCl / 5 h View Scheme

peracetic acid in water T=50°C; 8 h;

1: trichlorophosphate / 5 h / 85 °C / |Cooling with ice 2: acetic acid / 1 h / |Reflux 3: acetic acid / water / 2 h / |Reflux 4: bromine / dimethyl sulfoxide / 24 h / 20 °C 5: acetic acid / |Reflux View Scheme

bromine; sodium acetate in acetic acid 1 h; Ambient temperature;