aluminium trichloride; dimethylsulfide in dichloromethane 15 h; Ambient temperature;

1: O3, Oil Violet 2: sodium chlorite, sulphamic acid 3: 69 percent / AlCl3, Me2S / CH2Cl2 View Scheme

1: sodium chlorite, sulphamic acid 2: 69 percent / AlCl3, Me2S / CH2Cl2 View Scheme

1: 69 percent / NaHCO3 / methanol; H2O 2: O3, Oil Violet 3: sodium chlorite, sulphamic acid 4: 69 percent / AlCl3, Me2S / CH2Cl2 View Scheme

1: 89 percent 2: 69 percent / NaHCO3 / methanol; H2O 3: O3, Oil Violet 4: sodium chlorite, sulphamic acid 5: 69 percent / AlCl3, Me2S / CH2Cl2 View Scheme

1: 73 percent / conc. HCl / acetic acid 2: 89 percent 3: 69 percent / NaHCO3 / methanol; H2O 4: O3, Oil Violet 5: sodium chlorite, sulphamic acid 6: 69 percent / AlCl3, Me2S / CH2Cl2 View Scheme

1: 73 percent / ccHCl / acetic acid / 24 h / Ambient temperature 2: 89 percent / Me2S, BF3*OEt2 / CH2Cl2 / 42 h / Ambient temperature 3: 69 percent / aq.NaHCO3 / methanol / 6 h / Ambient temperature 4: 1.) O3, oil violet; 2.) dimethyl sulphide / 1.) EtOH, -75 degC; 2.) EtOH, 30 min. 5: 66 percent / sulphamic acid, sodium chlorite / CH2Cl2; H2O / 24 h / Ambient temperature 6: 69 percent / Me2S, AlCl3 / CH2Cl2 / 15 h / Ambient temperature View Scheme

sulfuric acid