关键词: 强酸型树脂, 氧化反应, 过氧化氢, 苯甲硫醚, 苯甲亚砜

Abstract: With a strong acid cation exchange resin as a catalyst and hydrogen peroxide as an oxidant, the selective oxidation of methyl phenyl sulfide to methyl phenyl sulfoxide was studied for the first time. The oxidation was obviously affected by several key reaction factors. The optimal condition was determined as: methyl phenyl sulfide (8 mmol) in methanol (10 mL) was conversed by hydrogen peroxide (8 mmol) into the corresponding sulfoxide at room temperature for 8 hours in the presence of D001 strong acid cation exchange resin (0.5 equivalent exchangeable hydrogen ion), under which both conversion and selectivity are beyond 99%. No significant activity change in the resin catalyst was observed even after 15 recycles. Using the similar procedure, other four sulfides have been successfully oxidized to sulfoxides with an excellent conversion and selectivity.

Key words: strong acid cation exchange resin , selective oxidation, hydrogen peroxide, methyl phenyl sulfide, methyl phenyl sulfoxide