Process for resolution of racemates of 2,2-dimethylcyclopropanecarboxylic acid
US5166417A · kind A · utility
1Cited by
5References
20Claims
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Key dates
| Filing date | Aug 27, 1991 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | Aug 27, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/487
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The enantiomers of 2,2-dimethylcyclopropanecarboxylic acid are separated by salt formation with optically active 1-(3-methoxyphenyl)-ethylamine, fractional crystallization of the diastereomeric salts and subsequent decomposition of the salts with a strong acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.