Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-08-25
2010-06-29
Andres, Janet L. (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
active
07745648
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.
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International Search Report based on International Application No. PCT/EP2004/001345, filed Feb. 13, 2004.
Masaru Hasegawa et al., “Electroorganic synthesis under solvent-free conditions. Highly regioselective anodic monofluorination of cyclic esthers, lactones, and a cyclic carbonate”, Tetrahedron Letters 43 (2002) pp. 1503-1505.
Boese Olaf
Peterkord Katja
Seffer Dirk
Andres Janet L.
Covington Raymond
Crowell & Moring LLP
Solvay Fluor GmbH
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