Process for the preparation of a pentenoate ester
AssigneesDsm N.W., E. I. Du Pont de Nemours and Company
InventorsOtto E. Sielcken, Frank P. W. Agterberg, Nicolaas F. Haasen
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Abstract
A process is described for the preparation of a pentenoate ester by carbonylation of butadiene or butadiene derivate in the presence of carbon monoxide, a alcohol and a catalyst system comprising palladium, an carboxylic acid and a phosphine ligand, wherein the carboxylic acid is pentenoic acid.
Claims9
A process for the preparation of a pentenoate ester by carbonylation of butadiene or a butadiene derivative in the presence of carbon monoxide, alcohol and a catalyst system comprising palladium, a carboxylic acid and a phosphine ligand, wherein the carboxylic acid is pentenoic acid.
A process for preparing a pentenoate ester comprising conducting the carbonylation of at least one member selected from the group consisting of butadiene and a butadiene derivative in a reaction mixture in the presence of carbon monoxide, an alcohol selected from the group consisting of methanol and ethanol, and a catalyst system, wherein said catalyst system is the combination palladium, a phosphine ligand, and pentenoic acid, wherein in said carbonylation the molar ratio of pentenoic acid to palladium is greater than 10:1, the molar ratio of said alcohol to butadiene or butadiene derivative is between 1:1 and 3:1.
Dependencies are inferred from the claim text.