Racemisation process
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United States of America Patent
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Aug 5, 2008
Grant Date -
N/A
app pub date -
Aug 9, 2007
filing date -
Aug 9, 2007
priority date (Note) -
Expired
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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-naphthaleneam-ine 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.
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