GB1258886A - - Google Patents

Info

Publication number
GB1258886A
GB1258886A GB1258886DA GB1258886A GB 1258886 A GB1258886 A GB 1258886A GB 1258886D A GB1258886D A GB 1258886DA GB 1258886 A GB1258886 A GB 1258886A
Authority
GB
United Kingdom
Prior art keywords
acetyl
ammonium
aminophenylacetate
acid
march
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
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
Priority claimed from JP44023954A external-priority patent/JPS4945388B1/ja
Priority claimed from JP4029869A external-priority patent/JPS4945857B1/ja
Application filed filed Critical
Publication of GB1258886A publication Critical patent/GB1258886A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/22—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for rolling metal immediately subsequent to continuous casting, i.e. in-line rolling of steel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1,258,886. Ammonium N-acetyl-α-aminophenylacetate. TANABE SEIYAKU CO. Ltd. 26 March, 1970 [28 March, 1969; 24 May, 1969; 10 Sept., 1969], No. 14977/70. Heading C2C. The invention comprises ammonium N-acetyl- DL-, D- and L-α-aminophenylacetate. The DL form is prepared by subjecting DL-α-aminophenylacetic acid to acetylation in an alkaline solution and neutralizing the product with ammonia. Ammonium N-acetyl-DL-α-aminophenylacetate is resolved by preparing a supersaturated solution thereof in an inert solvent therefor in which one of the enantiomers predominates in solution or is present as a seeding, allowing crystallization of the predominant enantiomers to take place and recovering the separated crystals. Optically active α-amino phenylacetic acid is prepared by deacetylating an optically active isomer of ammonium N- acetyl-α-aminophenyl acetate by treatment with an acid.
GB1258886D 1969-03-28 1970-03-26 Expired GB1258886A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP44023954A JPS4945388B1 (en) 1969-03-28 1969-03-28
JP4029869A JPS4945857B1 (en) 1969-05-24 1969-05-24
JP7175269 1969-09-10

Publications (1)

Publication Number Publication Date
GB1258886A true GB1258886A (en) 1971-12-30

Family

ID=27284450

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1258886D Expired GB1258886A (en) 1969-03-28 1970-03-26
GB4236170A Expired GB1283457A (en) 1969-03-28 1970-09-04 RACEMIZATION OF alpha-AMINOPHENYLACETIC ACID DERIVATIVES

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB4236170A Expired GB1283457A (en) 1969-03-28 1970-09-04 RACEMIZATION OF alpha-AMINOPHENYLACETIC ACID DERIVATIVES

Country Status (4)

Country Link
DE (1) DE2014874C3 (en)
FR (1) FR2040082A5 (en)
GB (2) GB1258886A (en)
NL (1) NL7003706A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2334620B1 (en) * 2008-09-05 2018-09-05 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. Process for enantioseparation of chiral systems with compound formation using two subsequent crystallization steps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2334620B1 (en) * 2008-09-05 2018-09-05 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. Process for enantioseparation of chiral systems with compound formation using two subsequent crystallization steps

Also Published As

Publication number Publication date
DE2014874A1 (en) 1970-10-15
FR2040082A5 (en) 1971-01-15
DE2014874B2 (en) 1974-02-28
NL7003706A (en) 1970-09-30
GB1283457A (en) 1972-07-26
DE2014874C3 (en) 1974-10-10

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees