474353-55-4Relevant academic research and scientific papers
Highly reactive σ-organonickel complexes in electrocatalytic processes
Budnikova, Yulia H.,Perichon, Jacques,Yakhvarov, Dmitry G.,Kargin, Yuri M.,Sinyashin, Oleg G.
, p. 185 - 192 (2001)
The electrochemical reduction of nickel complexes with 2,2′-bipyridine in the presence of ortho-substituted organic halides or white phosphorus yields the highly reactive σ-organonickel complexes. These complexes selectively react with organic halides for
Monovalent Nickel-Mediated Radical Formation: A Concerted Halogen-Atom Dissociation Pathway Determined by Electroanalytical Studies
Diao, Tianning,Fu, Yue,Lin, Qiao,Liu, Peng
supporting information, p. 14196 - 14206 (2021/09/13)
The recent success of nickel catalysts in stereoconvergent cross-coupling and cross-electrophile coupling reactions partly stems from the ability of monovalent nickel species to activate C(sp3) electrophiles and generate radical intermediates. This electroanalytical study of the commonly applied (bpy)Ni catalyst elucidates the mechanism of this critical step. Data rule out outer-sphere electron transfer and two-electron oxidative addition pathways. The linear free energy relationship between rates and the bond-dissociation free energies, the electronic and steric effects of the nickel complexes and the electrophiles, and DFT calculations support a variant of the halogen-atom abstraction pathway, the inner-sphere electron transfer concerted with halogen-atom dissociation. This mechanism accounts for the observed reactivity of different electrophiles in cross-coupling reactions and provides a mechanistic rationale for the chemoselectivity obtained in cross-electrophile coupling over homocoupling.
Study of the reactivity of organonickel sigma-complexes towards nitriles
Gafurov,Sakhapov,Babaev,Dobrynin,Kurmaz,Metlushka,Rizvanov, I. Kh.,Shaikhutdinova,Sinyashin,Yakhvarov
, p. 254 - 259 (2017/07/11)
The reactivity of organonickel sigma-complexes of type [NiBr(Ar)(bpy)], where Ar = 2,6-dimethylphenyl (Xyl), 2,4,6-trimethylphenyl (Mes), 2,4,6-triisopropylphenyl (Tipp), 2,4,6-tricyclohexylphenyl (Tchp), bpy = 2,2′-bipyridine, towards nitriles (acetonitr
The reactivity of 2,2'-bipyridine complexes in the electrochemical reduction of organohalides
Yakhvarov, D. G.,Samieva, E. G.,Tazeev, D. I.,Budnikova, Yu. G.
, p. 796 - 804 (2007/10/03)
Nickel(0) complexes coordinatively unsaturated with 2,2'-bipyridine (bpy) are more reactive in the oxidative addition to organic halides than the saturated analogs. ?-Organonickel complexes formed as intermediates of catalytic cycles were prepared in high
