Electron Shuttle in N-Heteroaromatic Ni Catalysts for Alkene Isomerization.

ABSTRACT: Simple N-heteroaromatic Ni(II) precatalysts, (L)NiMe₂ (L = bipy, bipym), were used for alkene isomerization. With an original reduction method using a simple borane (HB(Cat)), a low-valent Ni center was formed readily and showed good conversion when a reducing divalent lanthanide fragment, Cp*₂Yb, was coordinated to the (bipym)NiMe₂ complex, a performance not achieved by the monometallic (bipy)NiMe₂ analogue. Experimental mechanistic investigations and computational studies revealed that the redox non-innocence of the L ligand triggered an electron shuttle process, allowing the elusive formation of Ni(I) species that were central to the isomerization process. Additionally, the reaction occurred with a preference for mono-isomerization rath

SUBMITTER: Tricoire M 

PROVIDER: S-EPMC9400170 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature