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US 7,145,046 B2Granted
Production of fluorine compounds
AssigneeSolvay Fluor und Derivate GmbH
InventorsMax Braun, Carsten Brosch
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AssigneeSolvay Fluor und Derivate GmbH
InventorsMax Braun, Carsten Brosch
Estimating the term…
Inorganic and organic compounds containing fluorine can be produced, for example, from corresponding chlorine-containing compounds by chlorine/fluorine exchange using fluorinating agents. Monocyclic or bicyclic compounds containing at least two nitrogen atoms, at least one of which is incorporated into the ring system, can be used as catalysts or fluorinating agents for chlorine/fluorine exchange reactions to produce sulfurylchlorofluoride, sulfurylfluoride or a carboxylic acid fluoride. It is likewise possible to carry out HF addition to unsaturated carbon-carbon bonds or chlorine/fluorine exchange at carbon atoms. For example, monochloro or dichloro malonic acid esters can be converted to difluoro malonic acid esters. Work-up of the reaction mixture can be simplified by using suitable solvents which force the reaction mixture to exist in two phases.
A process for producing a fluorine-containing compound from a halogen-containing starting material, said process comprising effecting halogen-fluorine exchange or addition of HF to a C—C multiple bond in the presence of a catalyst or fluorination agent comprising an HF adduct of a monocyclic or bicyclic amine containing at least two nitrogen atoms, wherein at least one nitrogen atom is incorporated into the ring system.
An HF adduct of an amine selected from the group consisting of 1,5-diazabicyclo[4.3.0]non-5-ene;
Dependencies are inferred from the claim text.