lithium aluminium tetrahydride in diethyl ether T=20°C; 15 h;

1: 1.) triethylamine, ethyl chloroformate; 2.) ammonia / 1.) CH2Cl2, 0 deg C, 1 h; 2.) 15 h 2: 67 percent / lithium aluminium hydride / diethyl ether / 15 h / 20 °C View Scheme