Optically active iridium complexes and their use

Details Optically active iridium complexes and their use Optically active iridium complexes and their use

C - Chemistry, Metallurgy

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260/280.5, 260/6

C07F 15/00 (2006.01) C07C 29/132 (2006.01) C07C 29/143 (2006.01) C07C 33/20 (2006.01)

Patent

CA 1313876

6-15877/+ Optically active iridium complexes and their use Abstract Optically active iridium complexes of the formula (I) Image in which R is methyl and R1 is a hydrocarbon radical hav- ing at least one chiral C atom or a hydrocarbon radical containing at least one hetero atom and having at least one chiral C atom; or R is a hydrogen atom and R1 -is 1,2-di- phenylethyl or a 5-membered or 6-membered cycloaliphatic or cycloheteroaliphatic radical having at least two chiral C atoms and a phenyl group or alkyl group in the .alpha.-posi- tion, X? is an anion of a monobasic inorganic or organic acid and Y and Z are each ethylene, or Y and Z together represent an open-chain or cyclic diene which has 6 to 10 C atoms and whose diene groups are bonded via 1 or 2 C at- oms. They are suitable as enantioselective, homogeneous catalysts for the transfer hydrogenation of, in particular? prochiral ketones with secondary alcohols.

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