JPS55130946A - Preparation of optically active n-acylamino acid - Google Patents

Preparation of optically active n-acylamino acid

Info

Publication number
JPS55130946A
JPS55130946A JP3894079A JP3894079A JPS55130946A JP S55130946 A JPS55130946 A JP S55130946A JP 3894079 A JP3894079 A JP 3894079A JP 3894079 A JP3894079 A JP 3894079A JP S55130946 A JPS55130946 A JP S55130946A
Authority
JP
Japan
Prior art keywords
optically active
acylamino acid
racemizing
preparation
acid
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.)
Granted
Application number
JP3894079A
Other languages
Japanese (ja)
Other versions
JPS6136747B2 (en
Inventor
Ichiro Senhata
Shigeki Yamada
Chikara Hongo
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
Application filed by Tanabe Seiyaku Co Ltd filed Critical Tanabe Seiyaku Co Ltd
Priority to JP3894079A priority Critical patent/JPS55130946A/en
Publication of JPS55130946A publication Critical patent/JPS55130946A/en
Publication of JPS6136747B2 publication Critical patent/JPS6136747B2/ja
Granted legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Pyrrole Compounds (AREA)

Abstract

PURPOSE: To prepare the title optically active isomer, continuously, in high purity and yield, by crystallizing a super-saturated solution of N-acyl-DL-amino acid in the presence of crystals of the optically active isomer, under racemizing conditions.
CONSTITUTION: A super-saturated solution of an N-acyl-DL-amino acid (e.g. N- aliphatic acylamino acid, N-aromatic acylamino acid, etc.) is seeded with the crystals of an optically active N-acylamino acid, and crystallized under racemizing conditions, e.g. in the presence of a racemizing catalyst (e.g. lower aliphatic carboxylic acid anhydride, aromatic carboxylic acid anhydride, etc.) at 30°C to the boiling point of the solution.
COPYRIGHT: (C)1980,JPO&Japio
JP3894079A 1979-03-30 1979-03-30 Preparation of optically active n-acylamino acid Granted JPS55130946A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3894079A JPS55130946A (en) 1979-03-30 1979-03-30 Preparation of optically active n-acylamino acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3894079A JPS55130946A (en) 1979-03-30 1979-03-30 Preparation of optically active n-acylamino acid

Publications (2)

Publication Number Publication Date
JPS55130946A true JPS55130946A (en) 1980-10-11
JPS6136747B2 JPS6136747B2 (en) 1986-08-20

Family

ID=12539217

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3894079A Granted JPS55130946A (en) 1979-03-30 1979-03-30 Preparation of optically active n-acylamino acid

Country Status (1)

Country Link
JP (1) JPS55130946A (en)

Also Published As

Publication number Publication date
JPS6136747B2 (en) 1986-08-20

Similar Documents

Publication Publication Date Title
JPS5239613A (en) Process for recovery of high purity fatty acid and/or resin acid and s terols
JPS55130946A (en) Preparation of optically active n-acylamino acid
JPS5421862A (en) Production of liquid crystal elements
JPS5363375A (en) Preparation of substd. benzoic acid amide derivatives
JPS52151144A (en) Preparation of 2-substituted-acrylic amide and 2-substituted-propionic acid derivatives
JPS5686138A (en) Optical resolution of (+-)phenylglycine and (+-)camphorsulfonic acid
IT1228972B (en) PROCEDURE FOR THE PREPARATION OF 3 ALPHA 7 ACID DIHYDROXICOLANIC BETA OF HIGH PURITY.
JPS5655345A (en) Preparation of 2-pentenoate ester
JPS5212146A (en) Process for preparation of p- acetylaminobenzene-sufonylchloride
JPS5295674A (en) Preparation of 4#-substituted-2-methyl-2-piperidinopropiophenone and i ts salts
JPS5268155A (en) Preparation of 4'-alkyl-4-biphenylcarbonitrile
JPS5295653A (en) Preparation of o-sulfobenzoic acid imide
JPS5735556A (en) Preparation of guanidinomethylcyclohexanecarboxylic acid ester
JPS5427532A (en) Preparation of optical active 2-(substituted phenyl)-3-methyl-butyric acid chloride
JPS5344528A (en) Separation of dihalogenobenzenes
JPS55115846A (en) Optical resolution of dl-mandelic acid
JPS5365867A (en) Preparation of chenodeoxycholic acid crystal
JPS53112837A (en) Method of isolation of alpha-phenylpropionic acid compound
JPS5239648A (en) Aprocess for preparing p-cyanobenzoic acid amide from terephthalonitril e
JPS53105471A (en) Preparation of cyclic ethers
JPS5395955A (en) Preparation of 1,5-and 1,8-dinitroanthraquinone
JPS539730A (en) Preparation of optical active n-substituted diarylsulfinylimines
JPS5344513A (en) Preparation of alkanolamides
JPS5246066A (en) Preparation of optically active 5-oxo-2-pyrrolipinyl acetic acid salts
JPS5626864A (en) Preparation of aminoaryl beta-sulfatoethyl sulfone