Sulfones Synthesis Using Aqueous Hydrogen Peroxide
3267
completion of the reaction, the catalyst was removed by filtration, and
the resulting solution was concentrated under reduced pressure. The
reaction mixture was directly charged on a small silica gel (Grace
Davison, Grade 62, 70 × 200 Mesh) column and eluted with ethyl
acetate–hexane, to obtain pure compounds in good yields (Tables I and
II).
Recycling of Catalyst
After reaction, the catalyst was filtered, washed thoroughly with
ethanol, dried under vacuum, and reused for the oxidation reaction,
following the procedure described above.
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