The combination of the readily available chiral bisphosphine ligand Difluorphos with [Ir (COD) Cl] 2 in THF resulted in a highly efficient catalyst system for asymmetric hydrogenation of quinolines at quite low catalyst loadings (0.05–0.002 mol%), affording the corresponding products with high enantioselectivities (up to 96%), excellent catalytic activities (TOF up to 3510 h− 1) and productivities (TON up to 43000). The same catalyst ...
[Mori, Miwako; Akashi, Masaya; Hori, Masanori; Hori, Katsutoshi; Nishida, Mayumi; Sato, Yoshihiro Bulletin of the Chemical Society of Japan, 2004 , vol. 77, # 9 p. 1655 - 1670]
