hydrogenchloride; triethylamine 1) CH2Cl2, room temperature, 12 h, 2) methanol, room temperature, 12 h; Yield given. Multistep reaction;

1: 1) triethylamine, 2) 10percent methanol. HCl / 1) CH2Cl2, room temperature, 12 h, 2) methanol, room temperature, 12 h 2: hydrazine hydrate, HOAc / ethanol / 2 h / Heating View Scheme