JPS5572136A - Preparation of 2,3,5-trimethylquinone - Google Patents
Preparation of 2,3,5-trimethylquinoneInfo
- 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
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 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
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)
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 |
-
1978
- 1978-11-24 JP JP14580078A patent/JPS5572136A/en active Pending
Cited By (4)
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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