Novel separation process
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United States of America Patent
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Nov 19, 1991
Grant Date -
N/A
app pub date -
Aug 13, 1990
filing date -
Sep 27, 1989
priority date (Note) -
Expired
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Abstract
A process for the recovery of isomeric pure 7-chloro-quinaldine from isomeric mixtures of chloro-quinaldines comprising dissolving the isomeric mixture of chloro-quinaldines in an organic solvent, adding an aqueous tartaric acid solution to the organic solution to form the tartrate of 7-chloro-quinaldine in crystalline form, recovering the crystals and treating the same with a base to obtain 7-chloro-quinaldine.
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