Process for the carbonylation of arylalkyl halides

摘要

A method is provided for the preparation of alpha-aryl-propionic acids such as ibuprofen by carbonylating the corresponding 1-arylethyl halide in an acidic aqueous medium containing a palladium catalyst. In the preparation of ibuprofen, 1-(4'-isobutylphenyl)ethyl halide is reacted with carbon monoxide in an acidic aqueous medium containing a palladium catalyst.