Method for producing axial asymmetric compounds, intermediates for producing the same, complexes of transition metals with novel axial asymmetric compounds as the ligands, catalysts for asymmetric hydrogenation, and catalysts for forming asymmetric carbon-carbon bonds
申请人:Takasago International Corporation
公开号:US20010047110A1
公开(公告)日:2001-11-29
The invention provides a metal complex comprising a ligand and a metal. The ligand is an aminophosphine compound represented by the following formula (1)
1
[Each Ar represents an aryl group optionally substituted with a halogen atom, a lower alkyl group having 1 to 4 carbon atom or an alkoxy group, both Ar's being same or different with each other. R
1
and R
2
represent hydrogen atom, a cycloalkyl group having 5 to 7 carbon atoms, or an alkyl group having 1 to 6 carbon atom optionally substituted with a halogen atom, a lower alkoxy group or phenyl group, with R
1
and R
2
being same or different with each other. Alternatively, one of R
1
and R
2
is hydrogen atom and the other is —COR
3
(R
3
represents a cycloalkyl group having 5 to 7 carbon atoms, a lower alkyl group having 1 to 6 carbon atom optionally substituted with a halogen atom, a lower alkoxy group or phenyl group, a substituted or unsubstituted phenyl group, or a lower alkoxy group having 1 to 6 carbon atom optionally substituted with a cycloalkyl group having 5 to 7 carbon atoms, a halogen atom, a lower alkoxy group or phenyl group) or —SO
2
R
4
(R
4
represents a cycloalkyl group having 5 to 7 carbon atoms, an alkyl group optionally substituted with a halogen atom, a lower alkoxy group or phenyl group, or substituted or unsubstituted phenyl group). n represents 0]. The metal is rhodium, ruthenium, iridium or nickel.
本发明提供了一种包含配体和金属的金属配合物。该配体是由以下式子(1)表示的氨基膦化合物组成:1[每个Ar代表一个芳基基团,可以选择地用卤原子、具有1到4个碳原子的较低烷基基团或烷氧基取代,两个Ar相同或不同。R1和R2代表氢原子,具有5到7个碳原子的环烷基团或具有1到6个碳原子的烷基基团,可以选择地用卤原子、较低烷氧基或苯基取代,其中R1和R2相同或不同。或者,R1和R2中的一个是氢原子,另一个是-COR3(R3代表具有5到7个碳原子的环烷基团、具有1到6个碳原子的较低烷基基团,可以选择地用卤原子、较低烷氧基或苯基取代,取代或未取代的苯基或具有5到7个碳原子的环烷基团、卤原子、较低烷氧基或苯基取代的具有1到6个碳原子的较低烷氧基)或-SO2R4(R4代表具有5到7个碳原子的环烷基团、可以选择地用卤原子、较低烷氧基或苯基取代的烷基,或取代或未取代的苯基)。n代表0。金属是铑、钌、铱或镍。