acetyl chloride 2 h; Heating;

1: 95 percent / 1 N sodium methoxide, water / methanol / Ambient temperature 2: 91 percent / acetyl chloride / 2 h / Heating View Scheme

1: 1.) lithium hydroxide, water, 2.) bromine / dimethylformamide / 6 h / Ambient temperature 2: 91 percent / acetyl chloride / 2 h / Heating View Scheme

1: 85 percent / sodium methoxide / 2 h / Ambient temperature 2: 35 percent / 24 h / 180 °C 3: 95 percent / 1 N sodium methoxide, water / methanol / Ambient temperature 4: 91 percent / acetyl chloride / 2 h / Heating View Scheme

1: 35 percent / 24 h / 180 °C 2: 95 percent / 1 N sodium methoxide, water / methanol / Ambient temperature 3: 91 percent / acetyl chloride / 2 h / Heating View Scheme