GB1015059A - Process for purifying ª‡-methyl-ª‰-(3,4-dihydroxyphenyl)-alanine - Google Patents

Process for purifying ª‡-methyl-ª‰-(3,4-dihydroxyphenyl)-alanine

Info

Publication number
GB1015059A
GB1015059A GB37862/64A GB3786264A GB1015059A GB 1015059 A GB1015059 A GB 1015059A GB 37862/64 A GB37862/64 A GB 37862/64A GB 3786264 A GB3786264 A GB 3786264A GB 1015059 A GB1015059 A GB 1015059A
Authority
GB
United Kingdom
Prior art keywords
dihydroxyphenyl
methyl
alanine
purifying
aliphatic alcohol
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
GB37862/64A
Inventor
Rudolf Hiltmann
Hartmund Wollweber
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Priority to GB37862/64A priority Critical patent/GB1015059A/en
Publication of GB1015059A publication Critical patent/GB1015059A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C07C229/34—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 containing six-membered aromatic rings
    • C07C229/36—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 containing six-membered aromatic rings with at least one amino group and one carboxyl group bound to the same carbon atom of the carbon skeleton
    • 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
    • C07C227/42—Crystallisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A process for purifying a -methyl-b -(3,4-dihydroxyphenyl)-alanine comprises passing sulphur dioxide into a concentrated suspension of the crude compound in water or an aliphatic alcohol or an aqueous aliphatic alcohol, the solution obtained preferably being treated with carbon and then being free from sulphur dioxide by heating preferably in a vacuum and then cooled to complete the crystallization of the a -methyl-b -(3,4-dihydroxyphenyl)-alanine,
GB37862/64A 1964-09-16 1964-09-16 Process for purifying ª‡-methyl-ª‰-(3,4-dihydroxyphenyl)-alanine Expired GB1015059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB37862/64A GB1015059A (en) 1964-09-16 1964-09-16 Process for purifying ª‡-methyl-ª‰-(3,4-dihydroxyphenyl)-alanine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB37862/64A GB1015059A (en) 1964-09-16 1964-09-16 Process for purifying ª‡-methyl-ª‰-(3,4-dihydroxyphenyl)-alanine

Publications (1)

Publication Number Publication Date
GB1015059A true GB1015059A (en) 1965-12-31

Family

ID=10399544

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37862/64A Expired GB1015059A (en) 1964-09-16 1964-09-16 Process for purifying ª‡-methyl-ª‰-(3,4-dihydroxyphenyl)-alanine

Country Status (1)

Country Link
GB (1) GB1015059A (en)

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