hexathia-18-crown-6

…etherlike structures, such as the hexathia-18-crown-6. Oxidation of sulfides yields sulfoxides or, under more vigorous conditions, sulfones; reaction with alkyl halides gives sulfonium salts; and reaction with halogen compounds produces halosulfonium salts. Halosulfonium ions and related species formed from sulfoxides are key intermediates in the synthesis of polysaccharides from