| 摘要 |
Acid halides of the formula (R1, R2, R3)C-CO-Hal are obtained by reacting alkyl halides of the formula (R1, R2, R3)C-Hal with carbon monoxide under a pressure of 5 to 1,000 bar and at a temperature of -20 DEG C. to +100 DEG C. in the presence of 0.001 to 0.3 mol of AlCl3 and/or FeCl3, 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.
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