Iridium complexes, process for their preparation and their use

Details Iridium complexes, process for their preparation and their use Iridium complexes, process for their preparation and their use

C - Chemistry, Metallurgy

07

F

260/210, 260/323

C07F 15/00 (2006.01) C07C 217/76 (2006.01) C07C 225/22 (2006.01) C07C 255/59 (2006.01) C07H 23/00 (2006.01)

Patent

CA 2025458

Compounds of general formula I or Ia Image or mixtures thereof, wherein the groups P-L-P are a ligand from the group comprising diphosphine and diphosphinite, in which the secondary phosphine groups or phosphinite groups P are coupled via 2 to 4 C atoms, and which form a 5-, 6- or 7-membered ring with the Ir atoms, X, X1, X2, X3, X4, X5 and X6 independently of the others are Cl, Br or I, or X1 and X6 are H and X2 , X3 , X4 and X5 independently of the others are Cl, Br or I, or X1 and X5 are H and X2, X3, X4 and X6 independently of the others are Cl, Br or I, and M~ is an alkali metal cation or quaternary ammonium. The compounds are suitable as homogeneous catalysts for the (preferably) asymmetric hydrogenation of N-substituted imines to secondary amines.

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