US4788352A
Expired / Lapsed
US
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Trifluoroalkenes and a method for their preparation
Assignee: Shell USA Inc
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Filing: 1987-10-20
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Granted: 1988-11-29
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Expires: 2007-10-20
Abstract
Abstract C 4 to C 7 trifluoroalkene compounds and a method for their preparation by the contact of C 3 or C 4 trifluoroalkenes with C 2 to C 4 olefins in the presence of a homogeneous palladium (II) catalyst.
Inventors
- 👤 Edgar J. Smutny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:07
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/272; C07C17/275
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
54 words
A selective process for the preparation of trifluoroalkenes of the formula RCF 3 , wherein R is C 5 to C 6 unsaturated alkyl, which comprises contacting and reacting 3,3,3-trifluoropropylene with one or more C 3 to C 4 olefins in the presence of a liquid solution of one or more palladium (II) compounds.
Claim 2
Dependent Claim
54 words
A selective process for the preparation of trifluoroalkenes of the formula RCF 3 , wherein R is C 5 to C 6 unsaturated alkyl, which comprises contacting and reacting 3,3,3-trifluoropropylene with one or more C 3 to C 4 olefins in the presence of a liquid solution of one or more palladium (II) compounds.
Claim 3
Dependent Claim
32 words
The process of claim 1, wherein the 3,3,3-trifluoropropylene is contacted with the one or more olefins in the presence of one or more palladium (II) complexes with one or more chelating ligands.
Claim 4
Dependent Claim
15 words
The process of claim 1, wherein the contact takes place in an aprotic organic solvent.
Claim 5
Dependent Claim
22 words
The process of claim 1, which comprises contacting 3,3,3-trifluoropropylene with propylene in the presence of the one or more palladium (II) compounds.
Claim 6
Dependent Claim
37 words
The process of claim 4, wherein the one or more trifluoroalkene compounds are contacted with the propylene in the presence of at least one palladium (II) compound in the form of a complex with a chelating ligand.
Claim 7
Dependent Claim
15 words
The process of claim 5, wherein the contact takes place in an aprotic organic solvent.
Claim 8
Dependent Claim
54 words
A selective process for the preparation of trifluoroalkenes of the formula RCF 3 , wherein R is C 5 to C 6 unsaturated alkyl, which comprises contacting and reacting 3,3,3-trifluoropropylene with one or more C 3 to C 4 olefins in the presence of a liquid solution of a tetrakisacetonitrile palladium (II) fluoroborate catalyst.
Claim 9
Dependent Claim
54 words
A selective process for the preparation of trifluoroalkenes of the formula RCF 3 , wherein R is C 5 to C 6 unsaturated alkyl, which comprises contacting and reacting 3,3,3-trifluoropropylene with one or more C 3 to C 4 olefins in the presence of a liquid solution of a tetrakisacetonitrile palladium (II) fluoroborate catalyst.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-29 | 1992-05-30 | 1992-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-29 | 1996-05-30 | 1996-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-29 | 2000-05-30 | 2000-11-29 | $7700.00 | Window Closed / Lapsed |