hydrogen; palladium on activated charcoal in acetic acid

1: 83.5 percent / pyridine / 7 h / 100 °C 2: 88 percent / hydroxylamine hydrochloride, anhydrous sodium acetate / ethanol / 1.) reflux, 90 min, 2.) room temperature, 3 h 3: 89 percent / H2 / 5percent palladium on carbon / acetic acid View Scheme

1: 88 percent / hydroxylamine hydrochloride, anhydrous sodium acetate / ethanol / 1.) reflux, 90 min, 2.) room temperature, 3 h 2: 89 percent / H2 / 5percent palladium on carbon / acetic acid View Scheme

ammonium acetate in ethanol 8 h; Heating;