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US 5,359,081 AGranted
Carbonylation of epoxides
AssigneeShell Oil Company
InventorsEit Drent, Eric Kragtwijk
Life of this patent
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Abstract
The invention relates a process for the carbonylation of epoxides by reaction with carbon monoxide in the presence of a catalyst system containing a source of cobalt and a hydroxy substituted pyridine compound, whereby .beta.-propiolactones and/or derivatives thereof, such as .beta.-propiolactone polymers, .beta.-hydroxy carboxylic acids and esters, and .beta.-alkoxy carboxylic acids and esters, are produced.
Claims5
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.
Dependencies are inferred from the claim text.