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Nickel-Catalyzed Defluorinative Reductive Cross-Coupling Reaction of gem-Difluoroalkenes with Thiosulfonate or Selenium Sulfonate.

A nickel-catalyzed defluorinative reductive cross-coupling of gem-difluoroalkenes with thiosulfonate or selenosulfonates is described. The reaction involves the formation of thiolated or selenylated monofluoroolefins via regio-selective C-F bond cleavage and C-S or C-Se bond formation and features easily available substrates, mild reaction conditions and high E-selectivity. One of the derivatives by further cross coupling with PhMgBr exhibited aggregation induced emission (AIE) enhancementeffect.