Silylated ferrocenyldiphosphines, silylated ferrocenyldiphosphines bound to inorganic or polymeric organic supports and also metal complexes thereof, their preparation and use
US5627293A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 1996 |
| Grant date | May 6, 1997 |
| Priority date | — |
| Expiry date | Feb 23, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/842
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to ferrocenyldiphosphine ligands containing a silylene group, ferrocenyldiphosphines bound to inorganic or polymeric organic supports by this silylene group, their preparation and also their metal complexes with transition metals such as rhodium or iridium. The invention also relates to the use of these complexes for hydrogenating organic double or triple bonds, in particular olefinic double bonds and carbon-heteroatom double bonds. The complexes are particularly suitable for enantioselective hydrogenation using chiral diphosphines and prochiral unsaturated compounds. The preparation of these immobilized ferrocenyldiphosphines has only been made possible by the provision of correspondingly functionalized ferrocenyldiphosphines. These compounds and their preparation are likewise novel. Accordingly, the invention also provides compounds of the formula I ##STR1## in which R.sub.1 is C.sub.1 -C.sub.8 alkyl, phenyl or phenyl substituted by from 1 to 3 C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxyalkoxy groups; R.sub.2, R.sub.3, R.sub.10 and R.sub.11 are, independently of one another, C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.12 cycloalkyl, phenyl, C.sub.5 -C.sub.…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.