Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB32366/59A
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Tanabe Seiyaku Co Ltd
Original Assignee
Tanabe Seiyaku Co Ltd
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Publication date
Application filed by Tanabe Seiyaku Co LtdfiledCriticalTanabe Seiyaku Co Ltd
Publication of GB894047ApublicationCriticalpatent/GB894047A/en
C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
C12P13/00—Preparation of nitrogen-containing organic compounds
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Crude threonine containing allo-threonine is purified by treating the copper chelates thereof with an aliphatic aldehyde containing 2-8 carbon atoms to form bis(aldehyde) bis(threoninato) copper and its allo-isomer, separating the former from the latter by fractional crystallisation in an aqueous medium, and removing copper and aldehyde from the threoninato complex, e.g. described in Specification 814,063. Specification 894,046 also is referred to.
GB32366/59A1958-10-011959-09-23Isolation of threonine and allothreonine from their mixture
ExpiredGB894047A
(en)