Regioselective (Hetero)aryl C–H Thianthrenation and Late-Stage Transformations

In their recent report in Nature, Ritter and co-workers took advantage of a persistent sulfur-based radical cation to regioselectively install a thianthrene motif in simple or complex (hetero)arenes, and the resulting thianthrenium salts could undergo divergent late-stage transformations, offering chemists a powerful platform for introducing versatile functional groups and substituents in (hetero)arene rings.