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US4201714A
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Stabilized catalyst complex of rhodium metal, bidentate ligand and monodentate ligand
Assignee: Celanese Corp
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Filing: 1978-06-20
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Granted: 1980-05-06
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Expires: 1998-06-20
Abstract
Abstract This invention provides a catalyst and process for achieving highly selective straight chain aldehyde formation from alpha-olefins under hydroformylation conditions. The improved hydroformylation results are obtained under mild conditions of temperature and pressure in the presence of a stabilized catalyst complex of rhodium metal, bidentate ligand and monodentate ligand represented by the formula: ##STR1## Illustrative of a preferred bidentate ligand is trans 1,2-bis-(diphenylphosphinomethyl)cyclobutane. Illustrative of a preferred monodentate ligand is diphenylethylphosphine. It is an essential feature of the invention process that the monodentate ligand is provided in a molar excess with respect to the rhodium metal in the stabilized catalyst complex.
Inventors
- 👤 O. Richard Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:56
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; C; C07; C07C; C07C45/00; C07C45/49; C07C45/50; C07F; C07F15/00; C07F15/0006; C07F15/0073; C07F15/008
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
136 words
A stabilized catalyst complex of rhodium metal, bidentate ligand and monodentate ligand, said catalyst complex corresponding to the structural formula: ##STR13## wherein L is a bidentate ligand having the formula: ##STR14## where Z is an alicyclic structure; Q is a group VA element selected from nitrogen, phosphorus and arsenic; and R is an organic radical selected from aliphatic, alicyclic and aromatic groups containing between one and about 20 carbon atoms; and wherein L' is a monodentate ligand having the formula: Q'R'.sub.3 where Q' is a group VA element selected from nitrogen, phosphorus and arsenic; R' is an organic radical selected from aliphatic, alicyclic and aromatic groups containing between one and about 20 carbon atoms; and the steric parameter θ of Q'R' 3 in the catalyst complex is an apex angle between about 135 and 150 degrees.
Claim 2
Dependent Claim
136 words
A stabilized catalyst complex of rhodium metal, bidentate ligand and monodentate ligand, said catalyst complex corresponding to the structural formula: ##STR13## wherein L is a bidentate ligand having the formula: ##STR14## where Z is an alicyclic structure; Q is a group VA element selected from nitrogen, phosphorus and arsenic; and R is an organic radical selected from aliphatic, alicyclic and aromatic groups containing between one and about 20 carbon atoms; and wherein L' is a monodentate ligand having the formula: Q'R'.sub.3 where Q' is a group VA element selected from nitrogen, phosphorus and arsenic; R' is an organic radical selected from aliphatic, alicyclic and aromatic groups containing between one and about 20 carbon atoms; and the steric parameter θ of Q'R' 3 in the catalyst complex is an apex angle between about 135 and 150 degrees.
Claim 3
Dependent Claim
14 words
A stabilized catalyst complex in accordance with claim 1 wherein L is trans 1,2-bis(diphenylphosphinomethyl)cyclobutane.
Claim 4
Dependent Claim
14 words
A stabilized catalyst complex in accordance with claim 1 wherein L is trans 1,2-bis(diphenylphosphinomethyl)-3,5-dioxa-4,4-dimethylcyclopentane.
Claim 5
Dependent Claim
13 words
A stabilized catalyst complex in accordance with claim 1 wherein L' is diphenylethylphosphine.
Claim 6
Dependent Claim
13 words
A stabilized catalyst complex in accordance with claim 1 wherein L' is triphenylphosphine.
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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) | 1983-05-06 | 1983-11-05 | 1984-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-06 | 1987-11-05 | 1988-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-06 | 1991-11-05 | 1992-05-06 | $7700.00 | Window Closed / Lapsed |