Hydrochloric Acid → 2,3,4,5-Tetrafluorobenzoyl chloride

Participants

Reaction Steps

802 g of 2,3,4,5-tetrafluoro-benzotrichloride are initially introduced into a stirred apparatus, and 8 g of FeCl3 are added. Water is slowly metered in under the surface of the starting material at 120° C. (54 g of water in total). Vigorous evolution of hydrogen chloride immediately starts. The hydrogen chloride is passed to a destruction tower via the condenser. The mixture is stirred until the evolution of gas has ended. The product is then distilled. 569 g of 2,3,4,5-tetrafluoro-benzoyl chloride are obtained (89.4% of theory), boiling point: 80-82° C./18 mbar.

Provenance & Evidence