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US 7,745,648 B2Granted
Process for preparing 4-fluoro-1,3-dioxolan-2-one
AssigneeSolvay Fluor GmbH
InventorsOlaf Boese, Dirk Seffer, Katja Peterkord
Life of this patent
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Abstract
A process for preparing 4-fluoro-1,3-dioxolan-2-one comprising adding 4-fluoro-1,3-dioxolan-2-one to ethylene carbonate in an amount of from 3 to 20% by weight relative to the ethylene carbonate as a solvent for the ethylene carbonate, and introducing fluorine or a mixture containing fluorine in an inert gas is introduced into the resulting solution at 15 to 45° C.
Claims7
A process for preparing 4-fluoro-1,3-dioxolan-2-one by reaction of ethylene carbonate with elemental fluorine, said process comprising:
- mixing ethylene carbonate in a reaction vessel with 3-20% by weight 4-fluoro-1,3-dioxolan-2-one relative to the ethylene carbonate as a solvent for the ethylene carbonate, whereby a solution of ethylene carbonate in 4-fluoro-1,3-dioxolan-2-one is formed, and
- thereafter introducing fluorine gas or a mixture containing fluorine in an inert gas into the resulting solution at a temperature of 15 to 45° C.
Dependencies are inferred from the claim text.