JPS5572136A - Preparation of 2,3,5-trimethylquinone - Google Patents

Preparation of 2,3,5-trimethylquinone

Info

Publication number
JPS5572136A
JPS5572136A JP14580078A JP14580078A JPS5572136A JP S5572136 A JPS5572136 A JP S5572136A JP 14580078 A JP14580078 A JP 14580078A JP 14580078 A JP14580078 A JP 14580078A JP S5572136 A JPS5572136 A JP S5572136A
Authority
JP
Japan
Prior art keywords
trimethylphenol
catalyst
reaction mixture
polyoxyethylene glycol
aqueous solution
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
JP14580078A
Other languages
Japanese (ja)
Inventor
Hisaaki Yamamoto
Noriaki Yoshimura
Masuhiko Tamura
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.)
Kuraray Co Ltd
Original Assignee
Kuraray 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 Kuraray Co Ltd filed Critical Kuraray Co Ltd
Priority to JP14580078A priority Critical patent/JPS5572136A/en
Publication of JPS5572136A publication Critical patent/JPS5572136A/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

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

Abstract

PURPOSE: To obtain the title compound useful as a starting material for tocopherol, in high purity and yield, by separating the reaction mixture produced through the oxidation of 2,3,6-trimethylphenol with O2 in a specific solvent.
CONSTITUTION: 2,3,6-Trimethylphenol is oxidized with O2 or a gas comprising O2, in an aqueous solution containing 30W75wt% of a polyoxyethylene glycol derivative of the formula (R1 and R2 are H or 1W5C lower alkyl; n is 4W50), in the presence of a catalyst comprising copper, e.g. cupric chloride, and halide ions. The reaction mixture thus obtained is separated in to an organic layer containing 2,3,5-trimethylquinone as a chief component and an aqueous layer containing the catalyst and polyoxyethylene glycol derivative, and the organic layer is steam-distilled to obtain the object compound. After separating high-boiling by-products from the aqueous layer and the bottoms of the steam distillation, the aqueous solution can be recycled and reused in the oxidation step.
COPYRIGHT: (C)1980,JPO&Japio
JP14580078A 1978-11-24 1978-11-24 Preparation of 2,3,5-trimethylquinone Pending JPS5572136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14580078A JPS5572136A (en) 1978-11-24 1978-11-24 Preparation of 2,3,5-trimethylquinone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14580078A JPS5572136A (en) 1978-11-24 1978-11-24 Preparation of 2,3,5-trimethylquinone

Publications (1)

Publication Number Publication Date
JPS5572136A true JPS5572136A (en) 1980-05-30

Family

ID=15393435

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14580078A Pending JPS5572136A (en) 1978-11-24 1978-11-24 Preparation of 2,3,5-trimethylquinone

Country Status (1)

Country Link
JP (1) JPS5572136A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3133055A1 (en) 2013-07-02 2017-02-22 Basf Se Method for producing 2,3,5-trimethylbenzoquinone by oxidation of 2,3,6-trimethylphenol
US9926248B2 (en) 2013-07-02 2018-03-27 Basf Se Process for the preparation of 3-heptanol from a mixture containing 2-ehthylhexanal and 3-heptyl formate

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3133055A1 (en) 2013-07-02 2017-02-22 Basf Se Method for producing 2,3,5-trimethylbenzoquinone by oxidation of 2,3,6-trimethylphenol
US9758504B2 (en) 2013-07-02 2017-09-12 Basf Se Method for producing 2,3,5-trimethyl benzoquinone by oxidation of 2,3,6-trimethylphenol
US9926248B2 (en) 2013-07-02 2018-03-27 Basf Se Process for the preparation of 3-heptanol from a mixture containing 2-ehthylhexanal and 3-heptyl formate
US10364231B2 (en) 2013-07-02 2019-07-30 Basf Se Method for producing 2,3,5-trimethyl benzoquinone by oxidation of 2,3,6-trimethylphenol

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