Preparation method for 2,3-pentanedione
US10259766B1 · kind B1 · utility
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6Claims
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Key dates
| Filing date | Dec 7, 2018 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Dec 7, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C49/17
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A preparation method for 2,3-pentanedione, including the steps of adding one or both of 3-hydroxy-2-pentanone and 2-hydroxy-3-pentanone into water and conducting mixing, and introducing ozone at the temperature of 3-20° C. for a reaction to obtain 2,3-pentanedione. The synthesis process of the present invention uses ozone for oxidizing a mixture containing 3-hydroxy-2-pentanone and 2-hydroxy-3-pentanone, acetic acid is used as a cocatalyst, reaction conditions are mild, the operation process is simple, the product yield is high, and the cost is low.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.