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(E)-β-Trifluoromethyl vinylsulfones is accomplished through a reaction of alkynes, Togni reagent, and sodium benzenesulfinates under metal-free conditions. p-Acetylphenyl in R1 has the best activities against several tumor cells.doi:10.1039/c9ra06368d fatcat:hz6ooifbh5ebroypktcn765o7u