1: 62 percent / AlCl3, NaCl / 1.5 h / 170 °C 2: 58 percent / K2CO3 / acetone / 4 h / Heating 3: 70 percent / 5percent KOH / H2O; methanol / 0.25 h / Heating 4: Ac2O, AcONa / 1 h / Heating View Scheme

1: 58 percent / K2CO3 / acetone / 4 h / Heating 2: 70 percent / 5percent KOH / H2O; methanol / 0.25 h / Heating 3: Ac2O, AcONa / 1 h / Heating View Scheme

1: 70 percent / 5percent KOH / H2O; methanol / 0.25 h / Heating 2: Ac2O, AcONa / 1 h / Heating View Scheme