2-Pyridinyl/quinolyl-phenylamino-quinoline Complexes With CF3 and C2F5 Ligated Ni

Abstract

A new ligand architecture based on quinoline/pyridine attached ortho to the amine functionality on an aniline, which is coupled to another quinoline unit has been prepared. Ligands <b>L1</b> and <b>L2</b> have been complexed with CF₃ and C₂F₅ ligated nickel centers. The resulting complexes have been extensively studied by NMR spectroscopy (on ¹H, ¹³C{¹H}, and ¹⁹F nuclei) and single-crystal X-ray crystallography. A poorly defined mixture of complexes obtained from <b>L1</b> and nickel bis-trifluoromethyl complex was moderately active in C−H trifluoromethylation with the Umemoto I reagent.