GB1283457A - RACEMIZATION OF alpha-AMINOPHENYLACETIC ACID DERIVATIVES - Google Patents

RACEMIZATION OF alpha-AMINOPHENYLACETIC ACID DERIVATIVES

Info

Publication number
GB1283457A
GB1283457A GB4236170A GB4236170A GB1283457A GB 1283457 A GB1283457 A GB 1283457A GB 4236170 A GB4236170 A GB 4236170A GB 4236170 A GB4236170 A GB 4236170A GB 1283457 A GB1283457 A GB 1283457A
Authority
GB
United Kingdom
Prior art keywords
racemization
aminophenylacetic acid
alpha
acid derivatives
sept
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
GB4236170A
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.)
Tanabe Seiyaku Co Ltd
Original Assignee
Tanabe Seiyaku Co Ltd
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 by Tanabe Seiyaku Co Ltd filed Critical Tanabe Seiyaku Co Ltd
Publication of GB1283457A publication Critical patent/GB1283457A/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

1283457 N - Acetyl - α - aminophenylacetic acid salts TANABE SEIYAKU CO Ltd 4 Sept 1970 [10 Sept 1969] 42361/70 Addition to 1258886 Heading C2C Optically active ammonium N-acetyl-α-aminophenylacetate is racemized by heating it in the presence or absence of water. The racemization may be carried out at a temperature from about 100‹ to about 180‹ C. This racemization step may be applied to an optical isomer remaining after resolution and separation of its antipode. Examples are given which illustrate the process.
GB4236170A 1969-03-28 1970-09-04 RACEMIZATION OF alpha-AMINOPHENYLACETIC ACID DERIVATIVES Expired GB1283457A (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
GB1283457A true GB1283457A (en) 1972-07-26

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 Before (1)

Application Number Title Priority Date Filing Date
GB1258886D Expired GB1258886A (en) 1969-03-28 1970-03-26

Country Status (4)

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

Families Citing this family (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
DE2014874B2 (en) 1974-02-28
GB1258886A (en) 1971-12-30
DE2014874C3 (en) 1974-10-10
FR2040082A5 (en) 1971-01-15
NL7003706A (en) 1970-09-30
DE2014874A1 (en) 1970-10-15

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Legal Events

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