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JPS55105648A - Preparation of aminophenol - Google Patents

Preparation of aminophenol

Info

Publication number
JPS55105648A
JPS55105648A JP1283379A JP1283379A JPS55105648A JP S55105648 A JPS55105648 A JP S55105648A JP 1283379 A JP1283379 A JP 1283379A JP 1283379 A JP1283379 A JP 1283379A JP S55105648 A JPS55105648 A JP S55105648A
Authority
JP
Japan
Prior art keywords
aminophenol
dihydric phenol
solvent
reuse
boiling
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.)
Pending
Application number
JP1283379A
Other languages
Japanese (ja)
Inventor
Tatsuki Nagaoka
Hiroyuki Arita
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.)
Mitsui Petrochemical Industries Ltd
Original Assignee
Mitsui Petrochemical Industries 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 Mitsui Petrochemical Industries Ltd filed Critical Mitsui Petrochemical Industries Ltd
Priority to JP1283379A priority Critical patent/JPS55105648A/en
Publication of JPS55105648A publication Critical patent/JPS55105648A/en
Pending 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)

Abstract

PURPOSE: To separate aminophenols useful as synthetic intermediates of drugs, control agents, dyes, etc. efficiently and to circulate a catalyst for reuse, by subjecting the reaction product of a dihydric phenol and an amination reagent to azeotroic distillation with a specific high-boiling organic solvent.
CONSTITUTION: A dihydric phenol (e.g., hydroquinone, resorcin) is reacted with an amination reagent (e.g., ammonia) in the presence of a water-soluble catalyst, and, if necessary, in a solvent, to give an aminophenol. In the process, an organic solvent (e.g., light oil) boiling above a temperature 50°C lower than the boiling point of the aminophenol and immiscible with it is added to the reaction mixture. The resulting mixture is distilled in the form of the azeotropic mixture of the aminophenol, the unreacted dihydric phenol and the solvent to isolate the aminophenol. The water-soluble catalyst contained in the residue of the still is circulated to the reaction system for reuse.
COPYRIGHT: (C)1980,JPO&Japio
JP1283379A 1979-02-08 1979-02-08 Preparation of aminophenol Pending JPS55105648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1283379A JPS55105648A (en) 1979-02-08 1979-02-08 Preparation of aminophenol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1283379A JPS55105648A (en) 1979-02-08 1979-02-08 Preparation of aminophenol

Publications (1)

Publication Number Publication Date
JPS55105648A true JPS55105648A (en) 1980-08-13

Family

ID=11816369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1283379A Pending JPS55105648A (en) 1979-02-08 1979-02-08 Preparation of aminophenol

Country Status (1)

Country Link
JP (1) JPS55105648A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994021594A1 (en) * 1993-03-19 1994-09-29 Mitsui Petrochemical Industries, Ltd. Process for producing n,n-disubstituted aminophenol
JP2007216345A (en) * 2006-02-17 2007-08-30 Uryu Seisaku Ltd Reaction force absorbing grip of rotary driving tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994021594A1 (en) * 1993-03-19 1994-09-29 Mitsui Petrochemical Industries, Ltd. Process for producing n,n-disubstituted aminophenol
US5442121A (en) * 1993-03-19 1995-08-15 Mitsui Petrochemical Industries Ltd. Process for producing N,N-disubstituted aminophenol
JP2007216345A (en) * 2006-02-17 2007-08-30 Uryu Seisaku Ltd Reaction force absorbing grip of rotary driving tool

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