Chelating Phosphine–N-Heterocyclic Carbene Platinum Complexes via Catalytic Asymmetric Hydrophosphination and Their Cytotoxicity Toward MKN74 and MCF7 Cancer Cell Lines
A series of activated vinyl azoles was hydrophosphinated in the presence of a chiral palladacycle catalyst undermildconditions to give enantioenriched phosphine azoles with moderate enantioselectivities and yields. The racemic phosphine azoles were transformed into eleven novel chelating phosphine–N-heterocyclic carbene (NHC) platinumcomplexes. The drug efficacies of nine selected phosphine–NHC