The invention relates to novel diphosphines, in optically pure or racemic form, of formula (I):
1
in which:
R
1
and R
2
are a (C
5
-C
7
)cycloalkyl group, an optionally substituted phenyl group or a 5-membered heteroaryl group; and
A is (CH
2
—CH
2
) or CF
2
.
The invention further relates to the use of a compound of formula (I) as a ligand for the preparation of a metal complex useful as a chiral catalyst in asymmetric catalysis, and to the chiral metal catalysts comprising at least one ligand of formula (I).
该发明涉及一种新型
二膦化合物,其为光学纯或外消旋形式,
化学式(I)如下:
其中:
R1和R2为(C5-C7)环烷基,可选择取代的苯基或5-成员杂环烷基;以及
A为(
CH2- )或
CF2。
该发明还涉及将化合物的
化学式(I)用作
配体,用于制备
金属配合物,该
金属配合物在不对称催化中作为手性催化剂有用,并且包括至少一个
化学式(I)的手性
金属催化剂。