15629-49-9Relevant articles and documents
Monomeric three-coordinate N-heterocyclic carbene nickel(I) complexes: Synthesis, structures, and catalytic applications in cross-coupling reactions
Matsubara, Kouki,Fukahori, Yukino,Inatomi, Takahiro,Tazaki, Saeko,Yamada, Yuji,Koga, Yuji,Kanegawa, Shinji,Nakamura, Toshikazu
, p. 3281 - 3287 (2016)
A series of three-coordinate monovalent nickel halide complexes bearing N-heterocyclic carbene (NHC) ligands, i.e., NiCl(IPr)(L) [L = pyridine, P(OPh)3, bis(diphenylphosphino)butane (dppb), IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene], NiX(IMes)(PPh3) (X = Cl and Br, IMes = 1,3-bis(mesityl)imidazol-2-ylidene), were prepared. The complexes were identified using NMR spectroscopy, superconducting quantum interference device (SQUID), and X-ray crystallography. Additionally, ESR spectra of NiCl(IPr)(pyridine) were taken in toluene. These complexes had three-coordinate Y-shaped geometries in both the solid and solution states. The compounds containing IPr showed equilibrium between the monomeric and dimeric forms, with liberation of ligands. Addition of 1,2-bis(diphenylphosphino)ethane and 1,3-bis(diphenylphosphino)propane to the dinickel(I) IPr complex instead of dppb resulted in heterolytic cleavage to nickel(0) and nickel(II) species. Catalysis of Suzuki cross-coupling and Buchwald-Hartwig amination of aryl bromide using the complexes was investigated. The efficiencies in the amination of aryl bromide depended strongly on the additional donor ligands.
Controlled radical polymerization, and catalysts useful therein
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Page/Page column 7, (2017/05/31)
A catalyst is prepared in situ by reaction between an aryl halide and a Ni(0) complex. The catalyst may be used to promote chain-growth polymerization of halogen-substituted Mg or Zn monomers by a controlled radical mechanism. Polymers, co-polymers, block copolymers, polymer thin films, and surface-confined polymer brushes may be produced using the catalyst.
The first catalytic synthesis of an acrylate from CO2 and an alkene-A rational approach
Lejkowski, Michael L.,Lindner, Ronald,Kageyama, Takeharu,Bodizs, Gabriella E.,Plessow, Philipp N.,Mueller, Imke B.,Schaefer, Ansgar,Rominger, Frank,Hofmann, Peter,Futter, Cornelia,Schunk, Stephan A.,Limbach, Michael
supporting information, p. 14017 - 14025 (2013/01/15)
For more than three decades the catalytic synthesis of acrylates from the cheap and abundantly available C1 building block carbon dioxide and alkenes has been an unsolved problem in catalysis research, both in academia and industry. Herein, we