ELECTRON-TRANSFER PROCESSES IN THE ALKYLATION OF α,β-UNSATURATED SULFONES BY ORGANOMETALLIC REAGENTS
The alkyldesulfonylation of acetylenic and vinylic sulfones by organolithium and organomagnesium reagents is shown to take place via alkyl radicals arising from electrontransfer processes.
Visible light-driven cross-coupling reactions of alkyl halides with phenylacetylene derivatives for C(sp3)-C(sp) bond formation catalyzed by a B12 complex
Visible light-driven cross-coupling reactions of alkyl halides with phenylacetylene and its derivatives catalyzed by the cobalamin derivative (B12) with the [Ir(dtbbpy)(ppy)2]PF6 photocatalyst at room temperature are reported. The robust B12 catalyst and Ir photocatalyst provided high turnover numbers of over 33?000 for the reactions.