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Synthesis, Characterization, and Catalytic Activity of Chiral NHC Platinum(II) Pyridine Dihalide Complexes
A series of platinum(II) dihalide pyridine complexes bearing chiral C 2 -symmetric N-heterocyclic carbene (NHC) ligands [Pt(NHC * )(Py)(Hal) 2 ] was synthesized in a one pot procedure and characterized by NMR spectroscopy and single crystal X-ray diffraction (SC-XRD). The complexes were tested for the asymmetric cycloisomerization of enynol into bicyclo[3.1.0]hexanone and feature an excellent catalytic activity at room temperature along with a modest enantiomeric induction (up to 39%ee).doi:10.1021/acs.organomet.9b00850.s001 fatcat:ggiizi7yv5getkpj27hlqnpm7a