反应详情

A process for the preparation of the sulphone of the formula ##STR3## wherein 2-chloro-5-nitrobenzenesulphochloride is reacted with sodium sulphite to give 2-chloro-5-nitrobenzenesulphinic acid, the benzenesulphinic acid product is then reacted with ethylene oxide to give 2-chloro-5-nitrophenyl hydroxyethyl sulphone and the latter is then treated with hydrogen in the presence of hydrogenation catalysts to form the sulphone.