| 摘要 |
6-15878/+ Optically active iridium complexes, a process for their preparation and their use Optically active iridium complexes of the formula I and mixtures of the diastereomers (I) in which R1 and R' are H and A is a radical of the formula II, IIa or IIb (II), (IIa), (IIb) or R1 and R' represent a bond and A is a radical of the formula IIc (IIC) in which R2 is -H or -CH3, X? is an anion of an inorganic or organic acid, Y and Z are each ethylene, or Y and Z together represent an open-chain or cyclic diene having 6-10 C atoms, whose diene groups are bonded via one or two C atoms; and R is a hydrocarbon radical having at least one chiral C atom or a hydrocarbon radical having at least one hetero atom and at least one chiral C atom, or A is a radical of the formula II, IIa or IIb and R is phenyl, naphthyl, 2-methylphen-1-yl or 2,6-dimethylphen-1-yl. The complexes are suitable as enantioselective catalysts. |
