A Highly Reactive Geminal P/B Frustrated Lewis Pair: Expanding the Scope to C-X (X=Cl, Br) Bond Activation.

ABSTRACT: The geminal frustrated Lewis pair tBu₂ PCH₂ B(Fxyl)₂ (1; Fxyl=3,5-(CF₃ )₂ C₆ H₃ ) is accessible in 65 % yield from tBu₂ PCH₂ Li and (Fxyl)₂ BF. According to NMR spectroscopy and X-ray crystallography, 1 is monomeric both in solution and in the solid state. The intramolecular P⋅⋅⋅B distance of 2.900(5) Å and the full planarity of the borane site exclude any significant P/B interaction. Compound 1 readily activates a broad variety of substrates including H₂ , EtMe₂ SiH, CO₂ /CS₂ , Ph₂ CO, and H₃ CCN. Terminal alkynes react with heterolysis of the C-H bond. Haloboranes give cyclic adducts with strong P-BX₃ an

SUBMITTER: Samigullin K 

PROVIDER: S-EPMC4797709 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature