Process for making carboxylic acid halides

Details Process for making carboxylic acid halides Process for making carboxylic acid halides

C - Chemistry, Metallurgy

07

C

260/539

C07C 51/58 (2006.01) C07C 53/38 (2006.01)

Patent

CA 1202324

PROCESS FOR MAKING CARBOXYLIC ACID HALIDES ABSTRACT OF THE DISCLOSURE: The disclosure relates to a process for making car- boxylic acid halides by reacting an alkyl halide having 1 to 6 carbon atoms or aryl halide with carbon monoxide, optionally in admixture with up to 30 volume % hydrogen, under practically anhydrous conditions at temperatures of 350 to 575 K under pressures of 1 to 300 bars in the presence of a catalyst system containing at least one noble metal belonging to group VIII of the Periodic System of the elements or its compounds,iodine and/or its compounds and optionally an inert organic solvent. To this end, the disclosure provides for use to be made of a catalyst system which additionally contains a com- pound of the elements belonging to groups I to III of the Perodic System, and acetic acid.

443233

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