aluminum oxide T=150°C; 23 h;

1: 1.) NaH / 1.) mineral oil, benzene, room temperature, 30 min; 2.) benzene, room temperature, 4 h 2: 10 h / Heating 3: 82 percent / LiAlH4 / diethyl ether / 3 h / Heating 4: 45 percent / Al2O3 / 23 h / 150 °C View Scheme

1: 82 percent / LiAlH4 / diethyl ether / 3 h / Heating 2: 45 percent / Al2O3 / 23 h / 150 °C View Scheme