Process for preparing acid halides

Details Process for preparing acid halides Process for preparing acid halides

1982-07-08

1989-09-05

Killos, Paul J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic halides

C07C 1758

Patent

active

048636428

ABSTRACT:
Acid halides of the formula (R.sup.1, R.sup.2, R.sup.3)C--CO--Hal are obtained by reacting alkyl halides of the formula (R.sup.1, R.sup.2, R.sup.3)C--Hal with carbon monoxide under a pressure of 5 to 1,000 bar and at a temperature of -20.degree. C. to +100.degree. C. in the presence of 0.001 to 0.3 mol of AlCl.sub.3 and/or FeCl.sub.3, if appropriate in the presence of a further Bronsted or Lewis acid, per mol of the alkyl halide. The process is carried out, if desired in the presence of a solvent which is customary for Friedel-Crafts or Friedel-Crafts-related reactions and, if appropriate in the presence of a hydrogen halide. The acid chloride can be isolated from the reaction mixture or further reacted.

REFERENCES:
patent: 1891930 (1932-12-01), Hopff et al.
patent: 2378048 (1945-06-01), Theobald
Thomas, Anhydrous Aluminum Chloride In Organic Chemistry, Reinhold Publishing Corp., pp. 765,766 (1941).
Liebigs, Annalen Der Chemie, p. 72 (1959).

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