JPS55386A - Preparation of beta-tocopherol - Google Patents
Preparation of beta-tocopherolInfo
- Publication number
- JPS55386A JPS55386A JP6239079A JP6239079A JPS55386A JP S55386 A JPS55386 A JP S55386A JP 6239079 A JP6239079 A JP 6239079A JP 6239079 A JP6239079 A JP 6239079A JP S55386 A JPS55386 A JP S55386A
- Authority
- JP
- Japan
- Prior art keywords
- tocopherol
- give
- hexamethylenetetramine
- hydrogenated
- reacting
- 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
Links
Landscapes
- Pyrane Compounds (AREA)
Abstract
PURPOSE: To prepare β-tocopherol selectively, which is a synthetic intermediate of α-tocopherol having high vitamine E activity, by reacting δ-tocopherol with boric acid to give borate which is condensed with hexamethylene-tetramine and hydrogenated.
CONSTITUTION: δ-Tocopherol is refluxed with boric acid in an organic solvent under heating to give borate, which is reacted with hexamethylenetetramine in the presence of an organic acid catalyst at 105W110°C to prepare a condensation product. This compound is neutralized and hydrogenated in the presence of Ni, Pd, etc., so that it is methylated selectively at 5 position to give β-Tocopherol. β-tocopherol can be converted into α-tocopherol efficiently by reacting β-tocopherol with hexamethylenetetramine, followed by hydrogenation in the presence of a catalyst.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6239079A JPS55386A (en) | 1979-05-21 | 1979-05-21 | Preparation of beta-tocopherol |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6239079A JPS55386A (en) | 1979-05-21 | 1979-05-21 | Preparation of beta-tocopherol |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2488277A Division JPS53111069A (en) | 1977-03-09 | 1977-03-09 | Method of introducing methyl group to nonnalphaatocopherol |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55386A true JPS55386A (en) | 1980-01-05 |
JPS5538347B2 JPS5538347B2 (en) | 1980-10-03 |
Family
ID=13198746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6239079A Granted JPS55386A (en) | 1979-05-21 | 1979-05-21 | Preparation of beta-tocopherol |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55386A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005033091A1 (en) * | 2003-10-02 | 2005-04-14 | Basf Aktiengesellschaft | Production of a-tocopherol from raw material not containing a-tocopherols |
-
1979
- 1979-05-21 JP JP6239079A patent/JPS55386A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005033091A1 (en) * | 2003-10-02 | 2005-04-14 | Basf Aktiengesellschaft | Production of a-tocopherol from raw material not containing a-tocopherols |
Also Published As
Publication number | Publication date |
---|---|
JPS5538347B2 (en) | 1980-10-03 |
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