Process for making carboxylic acid halides

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

1983-12-15

1985-09-24

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 5158

Patent

active

045432171

ABSTRACT:
The disclosure relates to a process for making carboxylic 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 compound of the elements belonging to groups I to III of the Periodic System, and acetic acid.

REFERENCES:
patent: 2053233 (1936-09-01), Woodhouse
patent: 3632643 (1972-01-01), Prichard
patent: 4374070 (1983-02-01), Larkins et al.
patent: 4414160 (1983-11-01), Erpenbach et al.

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