lithium aluminium tetrahydride in diethyl ether 1 h; Heating;

1: 84 percent / SOCl2, triethylbenzylammonium chloride / 1 h / 60 °C 2: 472 g / K2CO3 / acetonitrile / 12 h / Heating 3: 83.2 percent / LiAlH4 / diethyl ether / 1 h / Heating View Scheme

1: 80.8 percent / NaBH4 / ethanol / 30 - 35 °C 2: 84 percent / SOCl2, triethylbenzylammonium chloride / 1 h / 60 °C 3: 472 g / K2CO3 / acetonitrile / 12 h / Heating 4: 83.2 percent / LiAlH4 / diethyl ether / 1 h / Heating View Scheme

1: 472 g / K2CO3 / acetonitrile / 12 h / Heating 2: 83.2 percent / LiAlH4 / diethyl ether / 1 h / Heating View Scheme