Condensed phase preparation of 2,3-pentanedione
US5831130A · kind A · utility
1Cited by
2References
21Claims
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Key dates
| Filing date | Apr 24, 1997 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Apr 24, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A condensed phase process for the preparation of purified 2,3-pentanedione from lactic acid and an alkali metal lactate is described. The process uses elevated temperatures between about 200.degree. to 360.degree. C. for heating a reaction mixture of lactic acid and an alkali metal lactate to produce the 2,3-pentanedione in a reaction vessel. The 2,3-pentanedione produced is vaporized from the reaction vessel and condensed with water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.