Catalyst for the metathesis of olefins
US4550216A · kind A · utility
15Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1984 |
| Grant date | Oct 29, 1985 |
| Priority date | — |
| Expiry date | Jun 15, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2531/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Improved catalyst for the metathesis of olefins comprising a compound of W with a halogen and with a phenoxy group which can carry substituents. It contains 4 halogen atoms and 2 phenoxy groups per atom of W. Preferably, the phenoxy group is halogenated. This catalyst allows the more rapid carrying out of various types of metathesis reactions, when it is used as a co-catalyst in conjunction with organo-metallic compounds, particularly Al or Sn. Among others, it allows the economical preparation of pheromones. It is practically insensitive to traces of water and oxygen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.