Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1990-08-13
1991-11-19
Lee, Mary C.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C07D21518
Patent
active
050668064
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.
REFERENCES:
patent: 4996324 (1991-02-01), Bott et al.
Kleffner Hans W.
Orth Winfried
Pastorek Emmerich
Weiss Wolfgang
Lee Mary C.
Rutgerswerke AG
Whittenbaugh Robert
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