Sulfanyl radical addition–cyclization and its synthetic application

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Abstract This review summarizes a new efficient carbon–carbon bond-forming reaction based on sulfanyl radical addition–cyclization, which proceeds by the formation of a carbon-centered radical species generated by the addition of a sulfanyl radical to a multiple bond and then intramolecular addition of the resulting carbon-centered radical to a multiple bond. The synthetic potentiality was demonstrated by the syntheses of anantine, oxo-parabenzlactone, cispentacin, vitamin D, and α-kainic acid.