Method of producing acid fluorides from acid chlorides
AssigneeSolvay Fluor und Derivate GmbH
InventorsMax Braun, Matthias Rieland, Francine Janssens, Kerstin Eichholz, Stefan Palsherm
Life of this patent
Estimating the term…
Abstract
Acid fluorides, for example carboxylic acid fluorides and sulfuryl fluoride are produced by reacting the corresponding acid chlorides with hydrogen fluoride adducts of ammonium fluoride or amine hydrofluorides (which act as a catalyst or as a fluorination agent). Consumed HF adducts may be regenerated with HF.
Claims11
A method of producing an acid fluoride from a corresponding acid chloride, the acid fluoride being selected from the group consisting of sulfuryl fluoride and sulfuryl chloride fluoride, by contacting sulfuryl chloride, sulfuryl chloride fluoride, or sulfur dioxide and chlorine to produce sulfuryl fluoride, or by contacting sulfuryl chloride or sulfur dioxide and chlorine to produce sulfuryl chloride fluoride with a hydrogen fluoride adduct of ammonium hydrofluoride or of a hydrofluoride of an organic nitrogen base, without the addition of an HF-binding base or an HF-binding solvent,
- wherein the hydrogen fluoride adduct serves as a fluorination reagent, and is not dehydrofluorinated beyond the stage of ammonium hydrofluoride or of the hydrofluoride of the organic nitrogen base.
Dependencies are inferred from the claim text.