N-hydroxy-2,4,6-trimethylbenzensulfonamide; sodium hydride 1.) THF, 0 deg C, 10 min, 2.) THF, benzene, RT, 30 min; Multistep reaction. Title compound not separated from byproducts;

iodine; potassium hydrogencarbonate in dichloromethane; water 0.5 h; Ambient temperature;

N-bromosuccinmide in dichloromethane 1 h; Ambient temperature;