A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 18437-78-0, Name is Tris(4-fluorophenyl)phosphine, molecular formula is C18H12F3P. In an article, author is Gibbons, Sarah K.,once mentioned of 18437-78-0, Recommanded Product: Tris(4-fluorophenyl)phosphine.
Chiral Bis(Phospholane) PCP Pincer Complexes: Synthesis, Structure, and Nickel-Catalyzed Asymmetric Phosphine Alkylation
A known ligand precursor, prepared by an improved method from 1,3-bis(bromomethylbenzene), a base, and (R,R)-2,5-dimethylphospholane-borane, was deprotected with DABCO and used to prepare chiral m-xylene-based PCP pincer complexes. Reaction with Ni(DME)Br-2 and NEt3 gave square planar Ni(DuPinPhos)(Br) (9), which was crystallographically characterized. Heating with [Ir(COE)(2)Cl](2) yielded the dinuclear hydride complex [Ir(DuPinPhos)(H)(Cl)](2)(mu-C6H4(CH2-dimethylphospholanyl)(2)] (10), which contained both pincer chelates and a bridging bis(phospholane). Nickel complex 9 was a catalyst precursor for enantioselective alkylation of secondary phosphines with 2- bromomethylnaphthalene using the base NaOSiMe3. The dynamic behavior of a catalytic intermediate, the P-stereogenic terminal phosphido complex Ni(DuPinPhos)(PPhIs) (Is = 2,4,6-(i-Pr)(3)C6H2), was characterized by variable temperature NMR spectroscopy.
Interested yet? Keep reading other articles of 18437-78-0, you can contact me at any time and look forward to more communication. Recommanded Product: Tris(4-fluorophenyl)phosphine.
Reference:
Phosphine ligand,
,Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate