yield (2 steps) without erosion of optical purity. The phosphine oxide 6da can be a precursor to an axially chiral mono-phosphine ligand, and furthermore, it afforded a crystal suitable for the x-ray crystallography analysis for the determination of the absolute stereochemistry. The stereochemistry of other products in Table was assigned based on the analogy to (R)-6da. Unexpectedly, attempted C-N coupling of triflate 5da gave C-H insertion product 7da, presumably assisted by the proximity of C4-Me group of the indole.