Phosphinometallocenylamides as novel ligands for asymmetric catalysis
US6620954B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2002 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Apr 2, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/842
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed are novel phosphinometallocenylamides that are useful as ligands for asymmetric catalysis. The novel ligands, which are readily modifiable, contain both a phosphine and an amide functionality linked by a metallocene backbone. In addition, the novel compounds are phosphine-amides derived from a phosphine-amine, rather than a phosphine-carboxylic acid. Further, described herein are both processes to make the novel ligands as well as processes that employ such ligands in a catalytically active composition comprising one or more phosphinometallocenylamide compounds in complex association with one or more Group VIb or Group VIII metals to provide chiral products. Further, we describe exemplary catalyst complexes incorporating the novel ligands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.