selenium(IV) oxide in ethyl acetate

potassium permanganate in ethanol; acetone

potassium permanganate in acetone T=40°C; 1 h;

silver(l) oxide in dimethyl sulfoxide T=60°C; 4 h;

silver(l) oxide in methanol; water T=60°C; 2 h;

1: 75 percent / KOH / dimethylformamide / 2 h / 80 - 90 °C 2: 80 percent / 30percent hydrogen peroxide, acetic acid / 12 h / 70 - 80 °C 3: 52 percent / acetic acid / Heating 4: 66 percent / KOH / ethanol; H2O / 2 h / Heating 5: 70 percent / KMnO4 / acetone / 1 h / 40 °C View Scheme

1: 52 percent / acetic acid / Heating 2: 66 percent / KOH / ethanol; H2O / 2 h / Heating 3: 70 percent / KMnO4 / acetone / 1 h / 40 °C View Scheme

1: 66 percent / KOH / ethanol; H2O / 2 h / Heating 2: 70 percent / KMnO4 / acetone / 1 h / 40 °C View Scheme

1: 1) conc. H2SO4, NaNO2; 2) conc. H2SO4 / 1) H2O, 0 deg C, 5 min; 2) reflux, H2O 2: 58 percent / Ag2O / dimethylsulfoxide / 4 h / 60 °C View Scheme

1: 1.) 48 percent HBr, Br2; 2.) NaNO2 / 1) 30-40 deg C; 2) -5 deg C, H2O; 10-15 Deg C, 90 min.; 3) 40 deg C. 15 min 2: dimethylsulfoxide / 0.08 h / 180 °C 3: 54 percent / HCl / 1.5 h / Heating 4: 70 percent / H2S, 25 percent NH3 5: 1) conc. H2SO4, NaNO2; 2) conc. H2SO4 / 1) H2O, 0 deg C, 5 min; 2) reflux, H2O 6: 58 percent / Ag2O / dimethylsulfoxide / 4 h / 60 °C View Scheme