US4617154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical process involving ethers and amines
Assignee: BP Chemicals Ltd
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Filing: 1984-09-04
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Granted: 1986-10-14
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Expires: 2004-09-04
Abstract
Abstract A process for the production of (1) an ether or (2) a second amine comprises reacting an activated olefin with respectively an alcohol or first amine in the presence of a catalyst which is either (a) an amidine or (b) a Lewis base and epoxide. The same catalyst may also be used to carry out the reverse reaction in which an activated olefin and an alcohol or first amine are produced from the appropriate ether or second amine.
Inventors
- 👤 Michael J. Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:59
CPC Classifications
C; C07; C07C; C07C255/00; C07C253/00; C07C253/30; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/70; C07C45/71; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
112 words
A process for the production of an ether which comprises reacting an olefin, capable of undergoing the Michael Reaction, and having at least one group selected from the group consisting of --COOR, --COR, --CONR 2 or --CN, where R is an alkyl or aryl group, bonded to an olefinically unsaturated carbon atom, with an alcohol in the presence of an effective amount of a catalyst characterised in that the catalyst is: (a) a cyclic amidine, in which amidine group forms part of a fused ring system, or (b) (i) a Lewis base consisting essentially of an organic compound selected from polyamines, trialkylamines, alkylphosphines, polyphosphines, arylamines and aryl phosphines and (ii) an epoxide.
Claim 2
Dependent Claim
112 words
A process for the production of an ether which comprises reacting an olefin, capable of undergoing the Michael Reaction, and having at least one group selected from the group consisting of --COOR, --COR, --CONR 2 or --CN, where R is an alkyl or aryl group, bonded to an olefinically unsaturated carbon atom, with an alcohol in the presence of an effective amount of a catalyst characterised in that the catalyst is: (a) a cyclic amidine, in which amidine group forms part of a fused ring system, or (b) (i) a Lewis base consisting essentially of an organic compound selected from polyamines, trialkylamines, alkylphosphines, polyphosphines, arylamines and aryl phosphines and (ii) an epoxide.
Claim 3
Dependent Claim
16 words
A process as claimed in claim 1 characterised in that the amidine is a cyclic amidine.
Claim 4
Dependent Claim
16 words
A process as claimed in claim 1 characterised in that the amidine is a cyclic guanidine.
Claim 5
Dependent Claim
25 words
A process as claimed in claim 1 characterised in that the catalyst is supported on an inert support which is insoluble in the reaction mixture.
Claim 6
Dependent Claim
33 words
A process as claimed in claim 1, wherein said catalyst is an amidine which is selected from the group consisting of 1,5-diazabicyclo [4.3.0] non-5-ene, 1,8-diazabicyclo [5.4.0] undec-7-ene, 1,5,7-triazabicyclo [4.4.0] dec-5-ene, and tetramethyl guanidine.
Claim 7
Dependent Claim
22 words
A process as claimed in claim 1, wherein said catalyst is selected from the group consisting of an amidine and a guanidine.
Claim 8
Dependent Claim
25 words
A process as claimed in claim 1, wherein said Lewis base is selected from the group consisting of triethylamine, pyridine, N-methyl imidazole, and polyvinyl pyridine.
Claim 9
Dependent Claim
20 words
A process as claimed in claim 1, wherein said epoxide is an unsubstituted C 2 to C 8 alkylene oxide.
Claim 10
Dependent Claim
24 words
A process as claimed in claim 1, wherein said epoxide is selected from the group consisting of ethylene oxide, propylene oxide and butylene oxide.
Claim 11
Dependent Claim
35 words
A process as claimed in claim 1, wherein said olefin is selected from the group consisting of esters of acrylic acid, esters of methacrylic acid, esters of crotonic acid, acrylonitrile, acrylamide and alkyl vinyl ketones.
Claim 12
Dependent Claim
27 words
A process as claimed in claim 1, wherein said alcohol is selected from the group consisting of methanol, ethanol, propanol, butanol, ethylene glycol, propylene glycol and phenol.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-10-13 | 1990-04-14 | 1990-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-13 | 1994-04-14 | 1994-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-13 | 1998-04-14 | 1998-10-14 | $7700.00 | Window Closed / Lapsed |