Synthesis of Phenyl-2- 3-pyridylvinyl sulfone

One 100 ml round bottom flask with stirrer bar One glass sintered funnel, diameter 7 cm One Buchner flask, 250 mL 

A solution of phenyl(3-pyridyl) vinyl sulfone (2.50 g) in toluene (5 ml) was added to the stirred polyleucine-hydrogen peroxide gel suspension in toluene. The mixture was stirred at room temperature for six hours and the reaction followed by TLC (eluent 60% ethyl acetate in hexane, vis. CAN). The product was isolated by hltration through Celite washing with ethyl acetate, drying over magnesium sulfate and concentration in vacuo. 

The procedure has been used to synthesize the epoxysulfones described in 

Lopez-Pedrosa, J-M., Pitts, M.R., Roberts S.M., Saminathan, S. and Whittall, J., Tetrahedron Lett. 2004, 45, 5073-5075. 

The absolute configurations of the epoxysulfones are tentative, having been assigned on the basis of the equivalent epoxidation reactions on unsaturated ketones. 

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