1: 81 percent / water / 16 h 2: 91 percent / acetyl chloride / 0.5 h / Heating 3: 67 percent / pyridine / tetrahydrofuran / 1.) room temperature, 40 min, 2.) reflux, 1 h 4: 91 percent / 0.17 h / 140 - 150 °C 5: 70 percent / sodium borohydride / 1 h / Heating View Scheme

1: 81 percent / water / 16 h 2: 91 percent / acetyl chloride / 0.5 h / Heating 3: 67 percent / pyridine / tetrahydrofuran / 1.) room temperature, 40 min, 2.) reflux, 1 h 4: 91 percent / 0.17 h / 140 - 150 °C 5: 70 percent / sodium borohydride / 1 h / Heating 6: 80 percent / aluminium chloride / nitrobenzene / 6 h / 50 - 60 °C View Scheme

1: 81 percent / water / 16 h 2: 91 percent / acetyl chloride / 0.5 h / Heating View Scheme