Chiral diphosphine compound intermediate for preparing the same

Details Chiral diphosphine compound intermediate for preparing the same Chiral diphosphine compound intermediate for preparing the same

1997-12-22

1999-02-16

Nazario-Gonzalez, Porfirio

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

502166, 556 13, 556 23, 556136, 556138, 568 12, 568 14, 568 17, 549212, 549220, 549221, C07F 928, C07F 1500, C07D31706

Patent

active

058722734

ABSTRACT:
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.

REFERENCES:
patent: 5510503 (1996-04-01), Laue et al.
patent: 5621128 (1997-04-01), Jendralla
patent: 5631393 (1997-05-01), Kohlpaintner et al.

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