1: 99 percent / H2 / (Ni-Al/NaOH/H2O) / methanol / 4.25 h 2: 97 percent / 60percent HClO4 / acetonitrile; H2O / 2.25 h 3: 1.)NH3, NH4Cl, 2.) CH3COOH / 1.) abs. CH3OH, 4.5 h, room temperature, 2.) 5.5 h, reflux View Scheme