Abstract
A novel, efficient, and green protocol to construct C–S bond has been developed via HBr/H2O2-mediated sulfenylation of styrenes and 4-hydroxycoumarins leading to unsymmetrical sulfides. Various unsymmetrical sulfides were prepared in one step with moderate to good yields using environmentally-friendly H2O2 as oxidant and HBr as catalyst. Based on the preliminary experimental results, a plausible reaction mechanism was proposed for HBr/H2O2-mediated formation of C–S bond with thiosulfates.
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