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US 4,376,208 AGranted
Hydroformylation of dihydrofuran
AssigneeThe Quaker Oats Company
InventorDavid E. Vietti
Life of this patent
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Abstract
A hydroformylation process is disclosed in which unsaturated cyclic ethers, such as unsaturated furans can be hydroformylated in good yield and under relatively mild conditions.
Claims3
A method for the hydroformylation of a a dihydrofuran comprising the steps of:
- (a) reacting said dihydrofuran in a reaction vessel with carbon monoxide and hydrogen in the presence of a catalyst,
- (b) said catalyst comprising a rhodium complex selected from the group of rhodium carbonyls, aryl phosphine rhodium carbonyl complexes and polymer bound rhodium phosphine complexes,
- (c) causing said reaction to occur at a temperature in the range of from about 25.degree. C. to 180.degree. C. and at a pressure of from about 1000 psig,
- (d) allowing said reaction to continue for a period of time sufficient to hydroformylate said dihydrofuran reactants,
- (e) thereby producing aldehydic tetrahydrofurans having one more carbon atom than the cyclic reactants.
2 more elements
Dependencies are inferred from the claim text.