Visible-Light-InducedSynergistic W/Cr Catalyzed <i>gem</i>-Difluoroallylationof Unactivated Alkanes

Currently, the scope of the Nozaki–Hiyama–Kishi (NHK) reaction is limited to aldehydes and ketones to construct alcohol derivatives. Herein, we have described a visible-light-induced synergistic W/Cr­(III)-catalyzed NHK-type <i>gem</i>-difluoroallylation reaction of unactivated cyclic and linear alkanes. The reaction merits feedstock materials, mild reaction conditions, and a wide functionality tolerance. Mechanistic studies imply the favorable reduction of CrCl₃ to CrCl₂ by reduced decatungstate W₁₀O₃₂^5–, thus closing the catalytic cycle.