σ-Alkenyl endo-palladacycle formation via regiospecific functionalisation of an unreactive NHC-tethered C(sp<sup>2</sup>)-H bond

Chapman, Michael R.Pask, Christopher M.Ariafard, AlirezaWillans, Charlotte E.2026-01-012026-01-011359-7345ORCID:/0000-0003-2383-6380/work/163628662https://hdl.handle.net/1885/733800785An unusual cyclometallation reaction at palladium is described, which proceeds via C-H functionalisation of a vinylic C(sp2)-H bond tethered to an NHC ligand. The energetic balance between palladacycle formation and bis-NHC complexation has been found to be very subtle.3enPublisher Copyright: © The Royal Society of Chemistry.σ-Alkenyl endo-palladacycle formation via regiospecific functionalisation of an unreactive NHC-tethered C(sp<sup>2</sup>)-H bond2015-03-2810.1039/c4cc10163d84925036380