Process for converting [R(-)-2(3-benzoylphenyl)-propionic acid to the S(+) isomer]
US5426215A · kind A · utility
1Cited by
3References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1994 |
| Grant date | Jun 20, 1995 |
| Priority date | — |
| Expiry date | Mar 16, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/487
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for transforming (benzoyl-3-phenyl)-2-propionic-R(-) acid into an S(+) isomer through the action of a base either in situ during the splitting of racemic ketoprofen or on the crystallization mother liquor of a (benzoyl-3-phenyl)-2-propionic-S(+) acid salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.