Synthesis of ruthenium or osmium metathesis catalysts
US6153778A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2000 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Mar 10, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/825
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to the synthesis of highly active ruthenium and osmium carbene metathesis catalyst in good yield from readily available starting materials. The catalysts that may be synthesized are of the general formula ##STR1## wherein: M is ruthenium or osmium; X and X.sup.1 are independently any anionic ligand; L and L.sup.1 are any neutral electron donor ligand; and, R and R.sup.1 are each hydrogen or one of the following substituent groups: C.sub.2 -C.sub.20 alkenyl, C.sub.2 -C.sub.20 alkynyl, C.sub.1 -C.sub.20 alkyl, aryl, C.sub.1 -C.sub.20 carboxylate, C.sub.1 -C.sub.20 alkoxy, C.sub.2 -C.sub.20 alkenyloxy, C.sub.2 -C.sub.20 alkynyloxy, aryloxy, C.sub.2 -C.sub.20 alkoxycarbonyl, C.sub.1 -C.sub.20 alkylthio, C.sub.1 -C.sub.20 alkylsulfonyl and C.sub.1 -C.sub.20 alkylsulfinyl. Optionally, the substituent group may be substituted with one or more groups selected from C.sub.1 -C.sub.5 alkyl, halogen, C.sub.1 -C.sub.5 alkoxy, and aryl. When the substitute aryl group is phenyl, it may be further substituted witn one or more groups selected from a halogen, a C.sub.1 -C.sub.5 alkyl, or a C.sub.1 -C.sub.5 alkoxy. Specific synthetic protocols for vinyl alkylidene cataly…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.