Functionalization of Planar Chiral Fused Arene Ruthenium Complexes: Synthesis, X-ray Structures, and Spectroscopic Characterization of Monodentate Triarylphosphines

The efficient functionalization of planar chiral ruthenium
naphthaleneand
ruthenium indenylscaffolds is reported. Mild reaction conditions
employing microwave heating have been developed for the derivatization
of sensitive cationic naphthalene ruthenium complexes. In particular,
a series of novel planar chiral monodentate phosphines and their gold­(I)
complexes have been synthesized and fully characterized by NMR spectroscopy
and X-ray crystallography. Furthermore, the electronic properties
of these phosphines (L) have been evaluated via the infrared CO stretching
frequencies of the corresponding Ni­(CO)3(L) complexes,
providing valuable insight for the design and application of these
chiral ligands in asymmetric catalysis.