Selective hydrocarboxylation of propylene to isobutyric acid
AssigneeThe Standard Oil Company (Ohio)
InventorsFrederick A. Pesa, Thomas A. Haase
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Abstract
A process for the selective hydrocarboxylation of propylene to produce predominantly isobutyric acid in the liquid phase is provided. The reaction of propylene, carbon monoxide and water wherein a water to propylene ratio is maintained of from about 0.01 to a value less than 1.0 is effected at a temperature of about 75.degree. C. to about 150.degree. C. and at a pressure of about 250 psi to about 5000 psi in the presence of a carboxylic acid solvent and a catalyst comprising a coordinating palladium compound, an organo-arsine and a hydrogen halide.
Claims36
A process for the selective hydrocarboxylation of propylene to produce butyric acid in the liquid phase at a temperature of about 75.degree. C. to about 150.degree. C. and a pressure of about 250 psi to about 5000 psi, wherein the isobutyric acid isomer product predominates, comprising forming a reaction mixture of propylene, carbon monoxide and water in the presence of a carboxylic acid-containing solvent and a catalyst comprising (i) a coordinating palladium compound, (ii) an organoarsine ligand and (iii) a complexing hydrogen halide;
- and maintaining a water to propylene ratio of from about 0.01 to a value less than 1.0.
Dependencies are inferred from the claim text.