sodium hydroxide in methanol Ambient temperature;

1: 96 percent / K2CO3, NaHSO3 / acetone; H2O / Ambient temperature 2: NaOH / methanol / Ambient temperature View Scheme

1: 96 percent / K2CO3, NaHSO3 / acetone; H2O / Ambient temperature 2: NaOH / methanol / Ambient temperature View Scheme

1: 95 percent / acetone / 0.5 h / Heating 2: 96 percent / K2CO3, NaHSO3 / acetone; H2O / Ambient temperature 3: NaOH / methanol / Ambient temperature View Scheme

1: 91.7 percent / red phosphorus, bromine, aq. HBr / acetic anhydride / 1 h / 40 - 50 °C 2: 95 percent / acetone / 0.5 h / Heating 3: 96 percent / K2CO3, NaHSO3 / acetone; H2O / Ambient temperature 4: NaOH / methanol / Ambient temperature View Scheme