Synthesis of ruthenium or osmium metathesis catalysts
US6313332A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2000 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Sep 28, 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## PA1 wherein: PA2 M is ruthenium or osmium; PA2 X and X.sup.1 are independently any anionic ligand; PA2 L and L.sup.1 are any neutral electron donor ligand; and, PA2 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 vin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.