GB978719A - A process for obtaining pure optically active glutamic acid - Google Patents

A process for obtaining pure optically active glutamic acid

Info

Publication number
GB978719A
GB978719A GB29953/62A GB2995362A GB978719A GB 978719 A GB978719 A GB 978719A GB 29953/62 A GB29953/62 A GB 29953/62A GB 2995362 A GB2995362 A GB 2995362A GB 978719 A GB978719 A GB 978719A
Authority
GB
United Kingdom
Prior art keywords
optically active
glutamic acid
racemic
acid
salt
Prior art date
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
GB29953/62A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ajinomoto Co Inc
Original Assignee
Ajinomoto Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ajinomoto Co Inc filed Critical Ajinomoto Co Inc
Publication of GB978719A publication Critical patent/GB978719A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C227/00—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
    • C07C227/38—Separation; Purification; Stabilisation; Use of additives
    • C07C227/40—Separation; Purification
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B57/00—Separation of optically-active compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C229/00—Compounds containing amino and carboxyl groups bound to the same carbon skeleton
    • C07C229/02—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton
    • C07C229/04—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated
    • C07C229/24—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having more than one carboxyl group bound to the carbon skeleton, e.g. aspartic acid
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B2200/00—Indexing scheme relating to specific properties of organic compounds
    • C07B2200/07—Optical isomers

Abstract

Optically active glutamic acid is prepared from a mixture of, (I) optically active and racemic glutamic acid; (II) soluble optically active and racemic alkali metal or ammonium glutamates; and (III) inorganic acid salts of optically active or racemic glutamic acid by treating the mixture with a substantially equivalent amount of an acid or alkali in (i) calculated on the racemic glutamic acid, in (ii) with an acid calculated on the optically active glutamate, and in (iii) with an alkali, calculated on the optically active salt, to form a water and/or alcohol soluble racemic salt and optically active glutamic acid. The mixture is adjusted with water and/or alcohol to substantially saturate the mixture with respect to the racemic salt and to form a solid phase containing the optically active acid and a liquid phase containing the racemic salt in equilibrium and separating the solid and liquid phases. The acids used may be hydrochloric, sulphuric and trichloracetic acids or an acidic cation-exchange resin, and the alkalis, sodium, potassium and ammonium hydroxides, diethylamine or an ion-exchange resin in (OH) form. The inorganic acid soluble salt of glutamic acid may be the glutamic acid hydrochloride or sulphate.
GB29953/62A 1961-08-05 1962-08-03 A process for obtaining pure optically active glutamic acid Expired GB978719A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2769461 1961-08-05

Publications (1)

Publication Number Publication Date
GB978719A true GB978719A (en) 1964-12-23

Family

ID=12228063

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29953/62A Expired GB978719A (en) 1961-08-05 1962-08-03 A process for obtaining pure optically active glutamic acid

Country Status (1)

Country Link
GB (1) GB978719A (en)

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