manganese(IV) oxide in dimethyl sulfoxide 24 h; Ambient temperature;

manganese(IV) oxide in dimethyl sulfoxide T=20°C;

1: 79 percent / triethylamine / dimethylformamide / 15 h / Ambient temperature 2: 2.) manganese dioxide / 1.) toluene, RT, 17 h, 2.) ethanol, RT, 30 min 3: 72 percent / manganese dioxide / dimethylsulfoxide / 24 h / Ambient temperature View Scheme