Racemisation process

Details Racemisation process Racemisation process

2007-08-09

2008-08-05

Barts, Samuel A (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

Reexamination Certificate

active

07408082

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.

REFERENCES:
patent: WO-92/15552 (1992-09-01), None
patent: WO-2005/023752 (2005-03-01), None

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