1: ethanol / 1 h / Heating 2: 97.2 percent / hydrazine hydrate / 1 h / Heating 3: 40 percent / melt / over an open flame View Scheme

1: 1.) 2percent NaOH; 2.) acetic acid / 1.) reflux, 30 min; 2.) reflux 2: ethanol / 1 h / Heating 3: 97.2 percent / hydrazine hydrate / 1 h / Heating 4: 40 percent / melt / over an open flame View Scheme

in melt over an open flame;

1: 97.2 percent / hydrazine hydrate / 1 h / Heating 2: 40 percent / melt / over an open flame View Scheme

hydrazine hydrate 0.25 h; Heating; Mechanism;