Z-selective metathesis catalysts
US9586981B2 · kind B2 · utility
2Cited by
6References
3Claims
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Key dates
| Filing date | Dec 12, 2013 |
| Grant date | Mar 7, 2017 |
| Priority date | — |
| Expiry date | Dec 12, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2261/418
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A novel chelated ruthenium-based metathesis catalyst bearing an N-2,6-diisopropylphenyl group is reported and displays near-perfect selectivity for the Z-olefin (>95%), as well as unparalleled TONs of up to 7,400, in a variety of homodimerization and industrially relevant metathesis reactions. This derivative and other new catalytically-active species were synthesized using an improved method employing sodium carboxylates to induce the salt metathesis and C—H activation of these chelated complexes. All of these new ruthenium-based catalysts are highly Z-selective in the homodimerization of terminal olefins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.