1,2-BIS(METHYL(1,1,3,3-TETRAMETHYLBUTYL)-PHOSPHINO)ETHANE, PROCESS FOR THE PREPARATION THEREOF, TRANSITION METAL COMPLEXES CONTAINING THE SAME AS THE LIGAND AND USES THEREOF
申请人:NIPPON CHEMICAL INDUSTRIAL COMPANY LIMITED
公开号:EP1245551A1
公开(公告)日:2002-10-02
The present invention provides a novel bisphosphine compound having a chiral center on the phosphorus atom, which is suitable as a ligand for an asymmetric catalyst for use in asymmetric hydrogenation, this bisphosphine compound being represented by the following formula (1):
(where t-C8H17 denotes 1,1,3,3-tetramethylbutyl), and a process for the production of this bisphosphine compound. Also provided are a transition metal complex having this bisphosphine compound as a ligand, and a process for the asymmetric hydrogenation of an unsubstituted carboxylic acid or its ester.
本发明提供了一种新型双膦化合物,其磷原子上有一个手性中心,适合作为不对称催化剂的配体,用于不对称氢化,这种双膦化合物由下式(1)表示:
(其中 t-C8H17 表示 1,1,3,3-四甲基丁基),以及生产这种双膦化合物的工艺。此外,还提供了一种以该双膦化合物为配体的过渡金属配合物,以及一种未取代的羧酸或其酯的不对称氢化工艺。