1: 1.) potassium hydroxide 2.) 72percent hydrazine hydrate / 1.) methanol, reflux, 20 min 2.) methanol, reflux, 30 min 2: 66.5 percent / pyridine 3: 100 percent / ethanol / 2 h / Heating View Scheme

1: 1.) potassium hydroxide 2.) 72percent hydrazine hydrate / 1.) methanol, reflux, 20 min 2.) methanol, reflux, 30 min 2: 86.5 percent / pyridine 3: ethanol / 2 h / Heating View Scheme