potassium carbonate; sodium iodide in acetone 12 h; Heating;

3-chloro-benzenecarboperoxoic acid in dichloromethane T=0 - 20°C;

1: 90 percent / m-CPBA / CH2Cl2 / 0 - 20 °C 2: 70 percent / p-nitrophenylsulfonylazide; ethyldiisopropylamine / acetonitrile / -10 - 20 °C View Scheme