ammonium hydroxide 48 h; Ambient temperature;

1: 70.4 percent / HCl gas / RT, 2 d, then reflux, 6 h 2: 1.) Na / 1.) EtOH, reflux, 1 h; 2.) EtOH, RT, 5 h 3: 79.7 percent / NH4OH / 48 h / Ambient temperature View Scheme

1: 1.) Na / 1.) EtOH, reflux, 1 h; 2.) EtOH, RT, 5 h 2: 79.7 percent / NH4OH / 48 h / Ambient temperature View Scheme