申请人:Iding Hans
公开号:US20070100152A1
公开(公告)日:2007-05-03
The invention is concerned with new phosphine ligands of the formula I
wherein
R
1
and R
2
are independently of each other alkyl, aryl, cycloalkyl or heteroaryl, said alkyl, aryl, cycloalkyl or heteroaryl may be substituted by alkyl, alkoxy, halogen, hydroxy, amino, mono- or dialkylamino, aryl, —SO
2
—R
7
, —SO
3
−
, —CO—NR
8
R
8′
, carboxy, alkoxycarbonyl, trialkylsilyl, diarylalkylsilyl, dialkylarylsilyl or triarylsilyl;
R
3
is alkyl, cycloalkyl, aryl or heteroaryl; R
4′
and R
4
signify independently of each other hydrogen, alkyl or optionally substituted aryl; or R
4′
and R
4
together with the C-atom they are attached to form a 3-8-membered carbocyclic ring; dotted line is absent or is present and forms a double bond; R
5
and R
6
are independently of each other hydrogen, alkyl or aryl; or linked together to form a 3-8-membered carbocyclic ring or an aromatic ring; R
7
is alkyl, aryl or NR
8
R
8′
; and R
8
and R
8′
are independently of each other hydrogen, alkyl or aryl; metal complexes with such ligands as well as the use of such metal complexes as catalysts in asymmetric reactions.
这项发明涉及具有以下结构的新膦配体I:
其中
R1和R2分别独立地是烷基、芳基、环烷基或杂环芳基,所述烷基、芳基、环烷基或杂环芳基可以被烷基、烷氧基、卤素、羟基、氨基、单烷基或二烷基氨基、芳基、—SO2—R7、—SO3−、—CO—NR8R8′、羧基、烷氧羰基、三烷基硅基、二芳基烷基硅基、二烷基芳基硅基或三芳基硅基取代;
R3是烷基、环烷基、芳基或杂环芳基;
R4′和R4独立地表示氢、烷基或可选择地取代的芳基;或R4′和R4与它们连接的C原子一起形成3-8成员的碳环;
虚线不存在或存在并形成双键;
R5和R6独立地是氢、烷基或芳基;或联合形成3-8成员的碳环或芳香环;
R7是烷基、芳基或NR8R8′;
R8和R8′独立地是氢、烷基或芳基;
这些配体的金属配合物以及将这些金属配合物用作不对称反应催化剂。