Chiral diphosphine compound intermediate for preparing the same
申请人:Takasago International Corporation
公开号:US05872273A1
公开(公告)日:1999-02-16
A novel diphosphine compound of the formula (I): ##STR1## where R.sup.1 and R.sup.2 represent independently cycloalkyl, unsubstituted or substituted phenyl, or a five-membered heteroaromatic ring. The compound is useful as a ligand for an asymmetric reaction, in particular, as an asymmetric hydrogenation catalyst.
Chiral diphosphine compound, intermediate for preparing the same, transition metal complex having the same diphosphine compound as ligand and asymmetric hydrogenation catalyst
申请人:Takasago International Corporation
公开号:EP0850945A1
公开(公告)日:1998-07-01
The present invention provides a novel diphosphine compound of the formula (I):
where R1 and R2 represent independently cycloalkyl, unsubstituted or substituted phenyl, or five-membered heteroaromatic ring. The compound is useful as a ligand for an asymmetric reaction, in particular, asymmetric hydrogenation catalyst.