Experimental study demonstrates copper-catalyzed cycloaddition of diaryl disulfides with alkenes, indicating a direct route to functionalized sulfur heterocycles.
A novel copper-catalyzed cycloaddition of diaryl disulfides to heterobicyclic alkenes has been developed. The C—S and C—C bonds can be formed simultaneously on the C═C bond of the olefins via a single-step cycloaddition to afford a series of 2,3-dihydrobenzo[b]thiophene derivatives. This reaction exhibits excellent diastereoselectivity and relatively broad substrate scope. Various functional groups attached to the substrates are tolerated in this protocol to give the corresponding exo adducts in moderate yields.
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Lin et al. (2021) studied this question.
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