1: 1. N2H4; 2. aq. NH3 / 1. methanol, H2O, 60 to 65 deg C, 3 h; 2. water, room temperature, 1 h 2: 75 percent / P2S5 / pyridine / 0.75 h / Heating 3: 89 percent / pyridine; butan-1-ol / 6 h / Heating View Scheme

With  ammonium hydroxide; hydrazine  1. methanol, H2O, 60 to 65 deg C, 3 h; 2. water, room temperature, 1 h;  Yield given. Multistep reaction;   

Multi-step reaction with 2 steps 1: 1. N2H4; 2. aq. NH3 / 1. methanol, H2O, 60 to 65 deg C, 3 h; 2. water, room temperature, 1 h2: 75 percent / P2S5 / pyridine / 0.75 h / Heating