2,4-dinitrobenzene-sulfenyl chloride; triethylamine in dichloromethane 2.5 h; Ambient temperature;

1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione in dimethyl sulfoxide T=55°C; 1 h;

1: cyclohexane; diethyl ether; tetrahydrofuran / 1 h / -78 °C 2: 53 percent / 1-hydroxy-1,2-benziodoxal-3(1H)-one-1-oxide / dimethylsulfoxide / 1 h / 55 °C View Scheme

2: 74 percent / 2,4-dinitrobenzenesulfenyl chloride, Et3N / CH2Cl2 / 2.5 h / Ambient temperature View Scheme

1.1: pyridine; trifluoromethylsulfonic anhydride / dichloromethane / -78 - 20 °C / Inert atmosphere 1.2: 48 h / 35 °C / Inert atmosphere 2.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 2 h / 0 - 20 °C 3.1: tetrachloromethane; potassium hydroxide; tert-butyl alcohol / dichloromethane / 35 - 80 °C View Scheme

1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 2 h / 0 - 20 °C 2: tetrachloromethane; potassium hydroxide; tert-butyl alcohol / dichloromethane / 35 - 80 °C View Scheme

1: t-BuOK / 0 °C 2: magnesium powder; Me3SiCl / 3 h / ultrasonication View Scheme

chloro-trimethyl-silane; magnesium Substitution; 3 h; ultrasonication;