Catalyst for the metathesis of olefins
US4639429A · kind A · utility
7Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1985 |
| Grant date | Jan 27, 1987 |
| Priority date | — |
| Expiry date | Jul 18, 2005 |
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. Amongst 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.