申请人:WATANABE Michimasa
公开号:US20080242534A1
公开(公告)日:2008-10-02
A compound represented by the following general formula (I):
[wherein R
1
represents hydrogen atom, or an alkyl group, R
2
represents a hydroxyalkyl group, or a triarylmethyloxyalkyl group, or R
1
and R
2
combine together to represent —C(R
3
)(R
4
)— (R
3
and R
4
represent hydrogen atom, an alkyl group, or hydroxyl group, or R
3
and R
4
may combine together to represent oxo group), or —C(R
5
)(R
6
)—O—C(R
7
)(R
8
)— (R
5
to R
8
represent hydrogen atom, an alkyl group, or hydroxyl group, or R
5
and R
6
may combine together to represent oxo group, and R
7
and R
8
may combine together to represent oxo group); Ar
1
to Ar
4
independently represent an aryl group (the aryl group may have 1 to 5 of the same or different substituents), *1 to *4 indicate asymmetric carbons, and configurations are cis between *1 and *2, cis between *3 and *4, and trans between *2 and *3]. An optically active phosphine ligand which can be easily synthesized and gives a transition metal complex showing superior asymmetric catalyst activity is provided.
提供了一个由以下一般式(I)表示的化合物:【其中R1代表氢原子,或烷基团,R2代表羟基烷基团,或三芳基甲氧基烷基团,或R1和R2结合在一起表示—C(R3)(R4)—(R3和R4代表氢原子,烷基团,或羟基,或R3和R4可以结合在一起表示酮基),或—C(R5)(R6)—O—C(R7)(R8)—(R5到R8代表氢原子,烷基团,或羟基,或R5和R6可以结合在一起表示酮基,R7和R8可以结合在一起表示酮基);Ar1到Ar4独立地代表芳基(芳基可能具有1到5个相同或不同的取代基),*1到*4表示不对称碳,配置在*1和*2之间为顺式,*3和*4之间为顺式,*2和*3之间为反式】。提供了一种可以轻松合成并给出显示出优越不对称催化剂活性的过渡金属配合物的光学活性膦配体。