hydrogen; acetic acid; platinum(IV) oxide P=760 Torr; 10 h;

1: 1.) NH2NH2*H2O / 1.) butanol, 98 deg C, 48 h, 2.) H2O, reflux, 30 min 2: 1.) NaH / 1.) DMF, 55 deg C, 30 min, 2.) DMF, 55 deg C, 90 min 3: 85 percent / 3percent HCl 4: 0.05 g / H2, acetic acid / PtO2 / 10 h / 760 Torr View Scheme

1: 1.) NaH / 1.) DMF, 55 deg C, 30 min, 2.) DMF, 55 deg C, 90 min 2: 85 percent / 3percent HCl 3: 0.05 g / H2, acetic acid / PtO2 / 10 h / 760 Torr View Scheme

1: 85 percent / 3percent HCl 2: 0.05 g / H2, acetic acid / PtO2 / 10 h / 760 Torr View Scheme

6 h; Heating;