hydrogenchloride 1) 0 deg C, 30 min, 2) room temperature, 15 min;

1: 86 percent 2: 90 percent / lithium aluminum hydride / diethyl ether / 5 h / Heating 3: 70 percent / concentrated hydrochloric acid / 1) 0 deg C, 30 min, 2) room temperature, 15 min View Scheme