Organic metal compound and process for preparing optically-active alcohols using the same
申请人:Miki Takashi
公开号:US20090062573A1
公开(公告)日:2009-03-05
The present invention provides an asymmetric reduction catalyst effective in preparing optically-active alcohol compounds having various functional groups, and a process for preparing optically-active alcohol compounds using said asymmetric reduction catalyst.
The organic metal compound of the present invention is represented by the following general formula (1):
wherein R
1
and R
2
may be mutually identical or different, and are an alkyl group, a phenyl group, a naphthyl group, a cycloalkyl group, or an alicyclic ring formed by binding R
1
and R
2
, which may have a substituent; R
3
is a hydrogen atom or an alkyl group; Cp is a cyclopentadienyl group, which may have a substituent, bound to M
1
via a π bond; X
1
is a halogen atom or a hydrido group; M
1
is rhodium or iridium; and * denotes asymmetric carbon.
本发明提供了一种在制备具有各种官能团的光学活性醇化合物中有效的非对称还原催化剂,以及使用所述非对称还原催化剂制备光学活性醇化合物的方法。
本发明的有机金属化合物由以下通式(1)表示:
其中R1和R2可以相互相同或不同,并且是烷基、苯基、萘基、环烷基或由R1和R2结合形成的脂肪环环,其中可能含有取代基;R3是氢原子或烷基;Cp是环戊二烯基,可能含有取代基,通过π键与M1结合;X1是卤素原子或氢化物基团;M1是铑或铱;*表示不对称碳。