Process for the racemization of nonracemic 3-oxyocylopentane- or -hexanecarboxylic acids or their esters with C.sub.1 -C.sub.6 -alcohols
US5488136A · kind A · utility
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Key dates
| Filing date | Apr 16, 1993 |
| Grant date | Jan 30, 1996 |
| Priority date | — |
| Expiry date | Apr 16, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/487
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Racemates are obtained from non-racemic 3-oxocyclopentane or 3-oxocyclohexane carboxylic acids or their esters by esterification and ketalization of the non-racemic acid with orthoformic acid ester in an alocohol, racemization and hydrolysis of the product obtained with an alcoholate and isolation of the racemate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.