PhB(OH)₂-Promoted Electrochemical Sulfuration–Formyloxylation of Styrenes and Selectfluor-Mediated Oxidation–Olefination

Abstract

We report a PhB(OH)₂-promoted electrochemical sulfuration-formyloxylation reaction of styrenes employing commercially available thiophenols/thiols as thiolating agents. Specifically, metal catalysts and external chemical oxidants are not needed in the reaction for the formation of β-formyloxy sulfides, and these sulfides can be further converted to (<i>E</i>)-vinyl sulfones via the Selectfluor-mediated oxidation-olefination. Notably, on the basis of this electrochemical oxidation strategy, β-hydroxy sulfide, β-formyloxy sulfoxide, β-formyloxy sulfone, and (<i>E</i>)-vinyl sulfoxide can also be easily prepared.