triethylamine in dichloromethane 24 h; Heating;

1: Et3N, Ac2O / 1.) 5 deg C, 1 h, 2.) -20 deg C, 1 h 2: 72 percent / xylene / 0.17 h / 105 °C 3: 91 percent / LiAlH4 / diethyl ether / 4 h / Heating 4: 84 percent / Et3N / CH2Cl2 / 24 h / Heating View Scheme

1: 72 percent / xylene / 0.17 h / 105 °C 2: 91 percent / LiAlH4 / diethyl ether / 4 h / Heating 3: 84 percent / Et3N / CH2Cl2 / 24 h / Heating View Scheme

1: 64 g / aq. Na2CO3 / 14 h / 5 °C 2: Et3N, Ac2O / 1.) 5 deg C, 1 h, 2.) -20 deg C, 1 h 3: 72 percent / xylene / 0.17 h / 105 °C 4: 91 percent / LiAlH4 / diethyl ether / 4 h / Heating 5: 84 percent / Et3N / CH2Cl2 / 24 h / Heating View Scheme

1: 91 percent / LiAlH4 / diethyl ether / 4 h / Heating 2: 84 percent / Et3N / CH2Cl2 / 24 h / Heating View Scheme