Racemisation process
US7408082B1 · kind B1 · utility
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20Claims
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Assignee
Inventor
Key dates
| Filing date | Aug 9, 2007 |
| Grant date | Aug 5, 2008 |
| Priority date | — |
| Expiry date | Aug 9, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2602/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a novel process for obtaining (1S,4S)N-methyl-4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-naphthaleneamine from a mixture of its isomers. The process involves isomerising the 1-position and the 4-position and effecting separation of the desired isomer by methods such as fractured crystallization. The process can be operated as a continuous process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.