Process for preparing acid halides

Details Process for preparing acid halides Process for preparing acid halides

C - Chemistry, Metallurgy

07

C

260/539

C07C 51/58 (2006.01) C07C 53/42 (2006.01) C07C 53/50 (2006.01)

Patent

CA 1214785

Process for preparing acid halides Abstract Acid halides of the formula (Rl, 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°C to +100°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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