Process for the preparation of 1-(aminomethyl) cyclohexaneacetic acid
US7393974B2 · kind B2 · utility
1Cited by
4References
5Claims
0Family size
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Key dates
| Filing date | Nov 29, 2001 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Nov 29, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A conversion process of gabapentin hydrochloride into gabapentin comprising: a) dissolution of gabapentin hydrochloride in a solvent in which the gabapentin hydrochloride and the gabapentin are completely soluble; and b) subsequent addition of an amine that allows the removal of the chloride ion from the solution containing gabapentin hydrochloride, by precipitation of the hydrochloride of the same amine, leaving the gabapentin in solution in free amino acid form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.