US4550216A
Expired / Lapsed
US
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Catalyst for the metathesis of olefins
Assignee: Societe National Elf Aquitaine
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Filing: 1984-06-15
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Granted: 1985-10-29
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Expires: 2004-06-15
Abstract
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.
Inventors
- 👤 Jean M. M. Basset
- 👤 Michel Leconte
- 👤 Jean Ollivier
- 👤 Francoise Quignard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:19
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0201; B01J31/0211; B01J31/0214; B01J31/12; B01J31/122; B01J31/14; B01J31/143; C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; C07C67/00; C07C67/475; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08; B01J2231/00; B01J2231/50; B01J2231/54; B01J2231/543; B01J2531/00; B01J2531/60; B01J2531/66; B01J31/16; B01J31/22; B01J31/2204; B01J31/2208; B01J31/2226; B01J31/26; B01J31/34; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
58 words
In the process for the metathesis of olefins by the contact therewith with a catalytic system comprising a compound of tungsten, the improvement which comprises employing as the compound of tungsten, a compound of the formula ##STR20## in which X is halogen, R is an electronegative group or atom, and n is an integer from 1 to 5.
Claim 2
Dependent Claim
58 words
In the process for the metathesis of olefins by the contact therewith with a catalytic system comprising a compound of tungsten, the improvement which comprises employing as the compound of tungsten, a compound of the formula ##STR20## in which X is halogen, R is an electronegative group or atom, and n is an integer from 1 to 5.
Claim 3
Dependent Claim
27 words
The process of claim 1 in which X and R are individually selected from the group consisting of chlorine and bromine and n is at least 2.
Claim 4
Dependent Claim
20 words
The process of claim 2 in which there are R moieties in the ortho positions with respect to the oxygen.
Claim 5
Dependent Claim
19 words
The process of claim 1 in which the electronegative group is --NO 2 , --SO 3 H, or --CN.
Claim 6
Dependent Claim
61 words
The process of claim 1 for the metathesis of olefins without functional groups in which the catalyst system contains at least one organoaluminum compound of the formula R' 3 Al, R'AlX 2 , R' 2 AlX and R' 3 Al 2 X 3 in which R' is a 1 to 6 carbon atom alkyl group and X is chlorine or bromine.
Claim 7
Dependent Claim
47 words
The process of claim 1 for the metathesis of olefins containing functional groups in which the catalytic system contains an organotin compound of the formula XaSnR".sub.(4-a) in which R" is a 1 to 6 carbon atom alkyl group, X is halogen and a is 0 to 2.
Claim 8
Dependent Claim
10 words
The process of claim 6 in which a is 0.
Claim 9
Dependent Claim
48 words
The process of claim 1 in which the catalytic system contains an organic derivative of lead of the formula PbR'" m X.sub.(4-m) or Pb 2 R'" b X.sub.(6-b) in which R'" is hydrocarbon group, X is halogen, m is 2 to 4 and b is 2 to 6.
Claim 10
Dependent Claim
16 words
The process of claim 8 in which R'" is 1 to 18 carbon atom alkyl group.
Claim 11
Dependent Claim
24 words
The process of claim 9 in which R'" is a 1 to 6 carbon atom alkyl group, m is 4 and b is 6.
Claim 12
Dependent Claim
15 words
The process according to claim 1 in which said compound of tungsten is di(dichlorophenoxy)tungsten tetrahalide.
Claim 13
Dependent Claim
14 words
The process of claim 1 in which said compound of tungsten is di(2,6-dichlorophenoxy)tungsten tetrachloride.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-28 | 1989-04-29 | 1989-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-28 | 1993-04-29 | 1993-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-28 | 1997-04-29 | 1997-10-29 | $7700.00 | Window Closed / Lapsed |