Hexacoordinated ruthenium or osmium carbene catalysts
US6077805A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1998 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Mar 2, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/825
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Hexacoordinated ruthenium and osmium catalysts of the formulae ##STR1## in which M and M' independently of one another are ruthenium or osmium; PA1 X, X', Y and Y' independently of one another are anionic ligands, or X and Y and X' and Y' in each case together are bis-anionic ligands PA1 L.sup.1 and L.sup.1' independently of one another are tertiary phosphine; PA1 L.sup.2 and L.sup.3 independently of one another are a monodentate ligand, or L.sup.2 and L.sup.3 together are bidentate, neutral electron donor ligands; PA1 L.sup.4 is tetradentate, neutral electron donor ligand; PA1 L.sup.5 is a bidentate, neutral electron donor ligand; and PA1 T and T' indepedently of one another are H or organic substituents, are useful for the synthesis of custom-tailored polymers and for the ring-closing metathesis of olefins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.