Chirale NHC-LigandenFluorareneNickelkatalyseChiral polyfluoroarene derivatives are an important scaffold in chemistry. An unprecedented enantioselective C–H alkylation of polyfluoroarenes with alkenes is described. The reaction employs bulky chiral N﹉eterocyclic carbene (NHC) ligands for nickel catalysts...
Chirale NHC-LigandenFluorareneNickelkatalyseChiral polyfluoroarene derivatives are an important scaffold in chemistry. An unprecedented enantioselective CH alkylation of polyfluoroarenes with alkenes is described. The reaction employs bulky chiral N‐heterocyclic carbene (NHC) ligands for nickel catalysts ...
Herein we report on the synthesis of a most sterically demanding, monodentate, and chiral NHC ligand, IBiox[(-)-menthyl] (1), and its successful application in palladium-catalyzed asymmetric α-arylation of amides. 展开 DOI: 10.1002/chin.200945121 年份: 2009 ...
Employing electron-rich NHC as the ligand, the electron-rich and stabilized palladium complex trend to oxidative addition to the relatively inert C–S bond and decreased the poisoning effect of sulfide and CO; a series of tert-(E)-butyl acrylates were obtained in moderate to good yields.关键...
Synthesis, characterization and bioactivities of dative donor ligand N-heterocyclic carbene (NHC) precursors and their Ag(I)NHC coordination compounds This study contains the synthesis of N-phthalimidomethyl-substituted NHC precursors and their Ag(I) NHC coordination compounds. The NHC precursors were ...
Regarding this matter, density functional theory (DFT) studies suggest the implementation of electronegative and sterically bulky ligand systems28,29. The parent heavier isocyanide HPSi has been generated and investigated in the gas phase. Unlike its lighter congener HNC, which is linear, HPSi ...
The naked nitrogen atom of the NHC ligand reacts as a strong nucleophile.doi:10.1002/chem.201202973John Wiley & Sons, LtdChemistryKösterke T, Kösters J, Würthwein E-U, Mück-Lichtenfeld C, Schulte to Brinke C, Lahoz F, Hahn F E. Chem – Eur J. 2012; 18 :14594–14598. doi...
4-恶二唑桥连双N-杂环卡宾化合物的合成与表征又发现卡宾的其它性质,希望有机会再做介绍 [1] a)Fischer,E.O.;Maashol,A.Angew.Chem.Int.Ed.En91.1964,580.(b) Fischer,E.0.Angew.Chem.Int.Ed.En91.1974,86,651. [2] Arduengo,A.J.;Harlow,R.L.;Kline,M.Z Am.Chem.Soc.1991,113,361. [3] ...
Chelation/nickellation of an unsymmetricalmeta-phenylene-based ligand featuring phosphinite and imidazolophosphine functionalities gives the corresponding pincer complex.N-Methylation of the latter generates a new complex featuring the ternary moiety NHC→Ph2P+→Ni, which can be converted subsequently into...
(NHC)PMCl2]2 (NHC = SIMes, SIDipp; M = Al, Ga) exhibit dimerization in solid state as well as in solution and exhibit different shapes of the central M2P2 cycle (butterfly or nearly square planar conformation) in solid state, depending on the size of the NHC ligand bound to the ...