Ferrocene diphosphines as ligands for homogeneous catalysts

Details Ferrocene diphosphines as ligands for homogeneous catalysts Ferrocene diphosphines as ligands for homogeneous catalysts

C - Chemistry, Metallurgy

07

F

C07F 17/02 (2006.01) B01J 31/22 (2006.01) B01J 31/24 (2006.01) C07C 67/31 (2006.01) C07C 69/66 (2006.01) C07C 213/08 (2006.01) C07C 217/76 (2006.01) C07C 231/12 (2006.01) C07C 231/18 (2006.01) C07C 233/47 (2006.01)

Patent

CA 2116420

Compounds of formula I (see formula I) wherein R1 is C1-C8alkyl, phenyl or phenyl which is substituted by 1 to 3 C1- C4alkyl or C1-C4alkoxy groups; R2 and R3 are each independently of the other typically C1- C12alkyl, C5-C12cycloalkyl, phenyl, or C1-C4alkyl- or C1-C4alkoxy-substituted C5- C12cycloalkyl, or phenyl which is substituted by one to three identical or different members selected from the group consisting of C1-C4alkyl, C1-C4alkoxy or halogen; R10 and R11 are identical and are typically C1-C12alkyl, C5-C12cycloalkyl, C1- C4alkyl- or C1-C4alkoxy-substituted C5-C12cycloalkyl or phenyl which is substituted by 1 to 3 identical or different members selected from the group consisting of C1- C4alkyl, C1-C4alkoxy or halogen; or R10 and R11 are different and are C1-C12alkyl, C5- C12cyclo- alkyl, C1-C4alkyl- or C1-C4alkoxy-substituted C5-C12cycloalkyl, phenyl or phenyl which is substituted by 1 to 3 identical or different members selected from the group consisting of C1-C4alkyl, C1-C4alkoxy or halogen, and * denotes a stereogenic carbon atom, in the form of their racemates and diastereoisomers or mixtures of diastereoisomers. Rhodium and iridium complexes with these ligands are suitable for use as homogeneous enantioselective catalysts for the hydrogenation of prochiral compounds containing carbon double bonds or carbon/hetero atom double bonds.

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