A highly efficient sulfonylation of thiols has been achieved through the metal-free NaI/TBHP-mediated cross-coupling of sulfonyl hydrazides and thiols at roomtemperature. This method provides a convenient and practical route to thiosulfonates in 84–99% yields (39 examples) with wide functional group compatibility.
Aerobic oxidative trifunctionalization of olefins for the synthesis of functionalizedβ-ketothiosulfones has been described. The transformation proceeds through molecular oxygen activation under copper catalysis and forms the two new C–S bonds in a single operation using mild conditions. A novel Cu-catalyzed sulfonyl radical addition/oxidation/funtionalization relay mechanism was proposed for the
An unprecedented reactivity of β‐iodovinyl sulfones in the presence of NaOAc is reported. A novel oxidative difunctionalization of (E)‐β‐iodovinyl sulfones with thiosulfonates in the presence of NaOAc in DMF has been developed to access a wide range of β‐keto thiosulfones in moderate to high yields.
Nickel-Catalyzed Difunctionalization of Alkynyl Bromides with Thiosulfonates and N-Arylthio Succinimides: A Convenient Synthesis of 1,2-Thiosulfonylethenes and 1,1-Dithioethenes
cesium carbonate is described. An operationally simple and highly regioselective atom transfer radical addition (ATRA) of alkynyl bromides provides a wide range of (E)-1,2-thiosulfonylethenes (α-aryl-β-thioarylvinyl sulfones) in moderate to high yields. The extensive substrate scope of both alkynyl bromides and thiosulfonates is explored with a broad range of functional groups. Indole-derived 1,1-bromoalkenes