Novel diphosphines, their complexes with transisition metals and their use in asymmetric synthesis
申请人:——
公开号:US20040260101A1
公开(公告)日:2004-12-23
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-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。