1: 70 percent / sodium acetate / acetic anhydride / 1.25 h / 100 °C 2: 68 percent / polyphosphoric acid / acetone; H2O / 23 h / 50 °C View Scheme

acetyl chloride in ethanol T=70°C; 2 h;

1: 80 percent / pyridine / 50 h / 25 °C 2: 80 percent / CCl4; formic acid / 0.58 h / 25 °C View Scheme