Claims
- 1. A process for the preparation of .alpha.,.beta.-unsaturated carboxylic acids or derivatives thereof comprising:
- (a) reacting an epoxide with carbon monoxide in the presence of a cobalt-containing catalyst system comprising a source of cobalt and a hydroxyl-substituted pyridine compound thereby producing a .beta.-propiolactone monomer or polymer; and
- (b) dehydrating said .beta.-propiolactone monomer or polymer.
- 2. The process of claim 1 wherein the dehydration in step (b) is carried out in the presence of a hydroxyl compound.
- 3. The process of claim 1 wherein the hydroxyl-substituted pyridine compound is a pyridine having the hydroxyl group substituent at the 3-position.
- 4. The process of claim 1 wherein the epoxide is an 1,2-epoxide.
- 5. The process of claim 4 wherein the 1,2-epoxide is ethylene oxide or propylene oxide.
Priority Claims (1)
Number |
Date |
Country |
Kind |
92201940.1 |
Jun 1992 |
EPX |
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Parent Case Info
This is a division of application Ser. No. 082,211, filed Jun. 24, 1993 U.S. Pat. No. 5,310,948.
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2782226 |
Seon et al. |
Feb 1957 |
|
3028417 |
Eisenmann |
Apr 1962 |
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3260738 |
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|
4209467 |
Kojima et al. |
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|
Foreign Referenced Citations (1)
Number |
Date |
Country |
1020575 |
Feb 1966 |
GBX |
Non-Patent Literature Citations (2)
Entry |
Abstract, CA107(25):235609x; R. A. Sawicki, Triphase Catalysis In Organometallic Anion Chemistry, ACS Symp. Ser., 326, 143-54 (1987). |
Abstract, CA92(1):6320a; Y. Kawabata, M. Tanaka, T. Hayashi, I. Ogata, Hydroesterification of Oxiranes Over Cobalt Carbonyl Catalysts, Nippon Kagaku Kaishi, (5), 635-40 (1979). |
Divisions (1)
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Number |
Date |
Country |
Parent |
82211 |
Jun 1993 |
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