Preparation of cyclic ketones
US5600013A · kind A · utility
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40Claims
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Key dates
| Filing date | Oct 4, 1995 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | Oct 4, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Cyclic ketones, notably cyclopentanone and 2,2-dimethylcyclopentanone, are simply, economically and efficiently prepared, even on an industrial scale, by decarboxylating/cyclizing a dicarboxylic acid, in liquid phase, in the presence of a catalytically effective amount of a condensed or uncondensed neutral phosphate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.