Ruthenium complexes of phosphine-aminophosphine ligands
US6939981B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2004 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Jun 25, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/09
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed are ruthenium complexes of phosphine-aminophosphine ligands that may be used to catalyze large number of reactions of a wide variety of substrates such as asymmetric hydrogenations, asymmetric reductions, asymmetric hydroborations, asymmetric olefin isomerizations, asymmetric hydrosilations, asymmetric allylations, and asymmetric organometallic additions. Also disclosed is a process for the preparation of the ruthenium complexes and processes for the enantioselective asymmetric hydrogenations of 1,3-dicarbonyl, α-hydroxycarbonyl, and β-hydroxycarbonyl compounds to produce the corresponding hydroxycarbonyl, 1,2-diol, and 1,3-diol compounds, respectively, using the ruthenium complexes to catalyze the hydrogenation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.