| 摘要 |
The present invention relates to a process for the preparation of a carboxylic acid of the formula III, wherein R1 is aryl, substituted aryl, naphthyl, substituted naphthyl or alkyl, R2, R3, R4 and R5 are independently hydrogen or alkyl, by reacting the corresponding olefin of formula I or the corresponding organic halide or alcohol of the formula II, wherein R1 is selected from the group consisting of aryl, substituted aryl, napthyl, substituted naphthyl or alkyl, R2, R3, R4 and R5 are independently hydrogen or alkyl and X is a halogen atom or a -OH group, using a novel water soluble palladium complex catalyst of general formula IV wherein R1, R2 and R3 are substituents on the phosphine ligand and selected from the group consisting of alkyl, aryl, arylalkyl, and cycloaliphatic, at least one of which carries a sulfonic acid and salts thereof, X is aryl or alkyl sulfonato or aryl or alkyl carboxylate or formato or a halide, is an anionic chelating ligand containing a N donor and O- group.
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