The sulfur oxygen (S⋯O) interaction was used herein to obtain (Z)-selective anti-Markovnikov vinyl sulfides from the addition of thiyl radicals to terminal alkynes. DFT calculations predicted that S⋯O interaction originated from the delocalization of the lone-pair of the carbonyl oxygen to the adjacent σ* orbital of the S atom of C–S.
M. Pramanik, A. Mathuri and P. Mal, Chem. Commun., 2021, 57, 5698 DOI: 10.1039/D1CC01257F
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