JPS6456659A - Purification of indoles - Google Patents

Purification of indoles

Info

Publication number
JPS6456659A
JPS6456659A JP62213556A JP21355687A JPS6456659A JP S6456659 A JPS6456659 A JP S6456659A JP 62213556 A JP62213556 A JP 62213556A JP 21355687 A JP21355687 A JP 21355687A JP S6456659 A JPS6456659 A JP S6456659A
Authority
JP
Japan
Prior art keywords
indole
extraction
liquid
purification
subjected
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
JP62213556A
Other languages
Japanese (ja)
Other versions
JP2595554B2 (en
Inventor
Mamoru Yanagiuchi
Torataro Ueda
Yakudo Tachibana
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP62213556A priority Critical patent/JP2595554B2/en
Publication of JPS6456659A publication Critical patent/JPS6456659A/en
Application granted granted Critical
Publication of JP2595554B2 publication Critical patent/JP2595554B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids

Landscapes

  • Indole Compounds (AREA)

Abstract

PURPOSE:To readily obtain the colorless and high-purity titled compound, by carrying out purification providing a process for concentrating indole by subjecting a hydrocarbon mixture containing indole to liquid-liquid extraction and purification process for simultaneously applying treatment processes of recrystallization and decolorination. CONSTITUTION:A hydrocarbon mixture containing indole such as coal tar fraction or liquefied oil is subjected to liquid-liquid extraction to concentrate the above-mentioned indole and as necessary extraction residue layer produced as by product is subjected to supercritical extraction treatment (selectively carrying out extraction of an ingredient other than indole, mainly neutral aromatic compound at short time) to afford a crude indole, which is then simultaneously subjected to recrystallization and decoloring treatments by crystallization with hexane and active silica and as a result purification of the indole is carried out to provide the purified colorless indole useful as a starting raw material of tryptophan which is a raw material for perfume, medicine, etc., and an essential amino acid and having 99.9% high purity.
JP62213556A 1987-08-27 1987-08-27 Indole purification method Expired - Lifetime JP2595554B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62213556A JP2595554B2 (en) 1987-08-27 1987-08-27 Indole purification method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62213556A JP2595554B2 (en) 1987-08-27 1987-08-27 Indole purification method

Publications (2)

Publication Number Publication Date
JPS6456659A true JPS6456659A (en) 1989-03-03
JP2595554B2 JP2595554B2 (en) 1997-04-02

Family

ID=16641163

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62213556A Expired - Lifetime JP2595554B2 (en) 1987-08-27 1987-08-27 Indole purification method

Country Status (1)

Country Link
JP (1) JP2595554B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013213004A (en) * 2012-04-02 2013-10-17 Dainippon Printing Co Ltd Method for producing olanzapine
CN111187196A (en) * 2018-11-15 2020-05-22 有限会社佐藤企画 Purification method of tar indole

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4993358A (en) * 1973-01-12 1974-09-05
JPS5826825A (en) * 1981-07-28 1983-02-17 アライド・コ−ポレ−シヨン Manufacture of tar base containing methylnaphthalene and indole
JPS61130257A (en) * 1984-11-23 1986-06-18 スタミカーボン・ベスローテン・ベンノートシヤツプ Collection of purified benzoic acid
JPS61130256A (en) * 1984-11-23 1986-06-18 スタミカーボン・ベスローテン・ベンノートシヤツプ Method and apparatus for purifying benzoic acid
JPS61140563A (en) * 1984-12-13 1986-06-27 Nippon Steel Chem Co Ltd Production of purified indole

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4993358A (en) * 1973-01-12 1974-09-05
JPS5826825A (en) * 1981-07-28 1983-02-17 アライド・コ−ポレ−シヨン Manufacture of tar base containing methylnaphthalene and indole
JPS61130257A (en) * 1984-11-23 1986-06-18 スタミカーボン・ベスローテン・ベンノートシヤツプ Collection of purified benzoic acid
JPS61130256A (en) * 1984-11-23 1986-06-18 スタミカーボン・ベスローテン・ベンノートシヤツプ Method and apparatus for purifying benzoic acid
JPS61140563A (en) * 1984-12-13 1986-06-27 Nippon Steel Chem Co Ltd Production of purified indole

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013213004A (en) * 2012-04-02 2013-10-17 Dainippon Printing Co Ltd Method for producing olanzapine
CN111187196A (en) * 2018-11-15 2020-05-22 有限会社佐藤企画 Purification method of tar indole

Also Published As

Publication number Publication date
JP2595554B2 (en) 1997-04-02

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