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US 7,442,809 B2Granted
Method for producing 1,3-dioxolan-4,6-dione compound
AssigneeFUJIFILM Corporation
InventorsShingo Sato, Hideto Mori
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Abstract
A method for producing a 1,3-dioxan-4,6-dione compound from a ketone compound and a malonic acid, the method comprising: precipitating a 1,3-dioxan-4,6-dione compound as a crystal from a mixed solvent comprising a first organic solvent having a dielectric constant of 10 or more and a water, so as to form a precipitated 1,3-dioxan-4,6-dione compound; and isolating the precipitated 1,3-dioxan-4,6-dione compound by a solid-liquid separation.
Claims7
A method for producing a 1,3-dioxan-4,6-dione compound from a ketone compound and a malonic acid, the method comprising:
- providing a reaction mixture of the ketone compound and the malonic acid, the reaction mixture containing 1,3-dioxan-4,6-dione compound;
- adding a mixed solvent comprising a first organic solvent having a dielectric constant of 10 or more and water, to form a precipitated 1,3-dioxan-4,6-dione compound;
- and
- isolating the precipitated 1,3-dioxan-4,6-dione compound by a solid-liquid separation,
- wherein the first organic solvent having a dielectric constant of 10 or more is an alcohol solvent having from 1 to 6 carbon atoms.
2 more elements
Dependencies are inferred from the claim text.