Na2WO4·2H2O; dihydrogen peroxide in ethanol; water T=20°C; 24 h;

1: 11.39 g / silver oxide / dimethylformamide / overnight 2: 93 percent / 85percent hydrazine hydrate, hydrogen / Pd/C / ethanol / 1.) 15 min, room temp.; 2.) reflux, 1 h 3: 20.5 percent / sodium tungstate dihydrate, 30percent hydrogen peroxide / ethanol; H2O / 24 h / Ambient temperature View Scheme

1: 93 percent / 85percent hydrazine hydrate, hydrogen / Pd/C / ethanol / 1.) 15 min, room temp.; 2.) reflux, 1 h 2: 20.5 percent / sodium tungstate dihydrate, 30percent hydrogen peroxide / ethanol; H2O / 24 h / Ambient temperature View Scheme

1: 11.39 g / silver oxide / dimethylformamide / overnight 2: 93 percent / 85percent hydrazine hydrate, hydrogen / Pd/C / ethanol / 1.) 15 min, room temp.; 2.) reflux, 1 h 3: 20.5 percent / sodium tungstate dihydrate, 30percent hydrogen peroxide / ethanol; H2O / 24 h / Ambient temperature View Scheme

1: silver(l) oxide / dimethyl sulfoxide; N,N-dimethyl-formamide / Heating 2: hydrogenchloride; tin; hydrazine hydrate / ethanol / 1.25 h / 20 °C / Reflux 3: Na2WO4·2H2O; dihydrogen peroxide / ethanol; water / 24 h / 20 °C View Scheme