C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/292.3
C07D 211/22 (2006.01)
Patent
CA 1257599
ABSTRACT OF THE DISCLOSURE A process for the optical resolution of the enantio- mers of trans-3-[(4-methoxyphenoxy)-methyl]-1-methyl-4-phenyl- piperidine, which involves reaction with an enantiomer of mandelic acid to form a mixture of diastereomeric compounds, precipitating one of the diastereoisomers, and converting it to the desirable free (+)-trans isomer, as well as the key diastereomeric isomer intermediate, is disclosed.
448829
Christensen Jorgen A.
Everland Peer
A/s Ferrosan
Gastle And Associates
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