A novel Cu-catalyzed direct hydrosulfonylation of alkynes with arylsulfinic acids for the synthesis of (E)-vinyl sulfones has been realized under mild conditions with 100% atom efficiency. The present protocol provides an attractive approach to various vinyl sulfones in good to excellent yields, with the advantages of operation simplicity, atom economy, and high stereo- and regioselectivities.
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Wei et al. (2014) studied this question.
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