Heteroaromatic diphosphines as chiral ligands
US6077958A · kind A · utility
3Cited by
3References
4Claims
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Key dates
| Filing date | Apr 27, 1999 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Apr 27, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/822
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Chiral diphosphines are constituted by an aromatic pentatomic biheterocyclic system, suitable to act as chiral ligands and complexes between the diphosphines and transition metals. They may be utilized as chiral catalysts in stereocontrolled reactions, such as diastereo- and enantioselective reduction reactions. Process is for the preparation of these chiral diphosphines; and process is for the preparation of these complexes and for their utilization as chiral catalysts in stereocontrolled reactions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.