JPS57185237A - Preparation of 2,5-dihalo-1,4-benzoquinone-3,6-dicarboxylic diester - Google Patents
Preparation of 2,5-dihalo-1,4-benzoquinone-3,6-dicarboxylic diesterInfo
- Publication number
- JPS57185237A JPS57185237A JP6935481A JP6935481A JPS57185237A JP S57185237 A JPS57185237 A JP S57185237A JP 6935481 A JP6935481 A JP 6935481A JP 6935481 A JP6935481 A JP 6935481A JP S57185237 A JPS57185237 A JP S57185237A
- Authority
- JP
- Japan
- Prior art keywords
- cyclohexanedione
- dialkoxycarbonyl
- halogen
- dihalo
- benzoquinone
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the titled compound in high yield and purity without taking out an intermediate product, by halogenating and oxidizing any 2,5-dialkoxycarbonyl-1,4-cyclohexanedione in a nonpolar inert organic solvent continuously.
CONSTITUTION: A 2, 5-dialkoxycarbonyl-1, 4-cyclohexanedione, e.g. 2, 5-diethoxycarbonyl-1,4-cyclohexanedione, of formulaI (R is 1W12C alkyl) is continuously halogenated and oxidized with a halogen, e.g. bromine, in a nonpolar inert organic solvent, e.g. dichloromethane, chloroform or carbon tetrachloride, to give the aimed compound of formula II (X is halogen) without taking out the 1, 4- hydroquinone derivative formed as an intermediate.
EFFECT: Easily preparable in a short time.
USE: Organic oxidizing agents, intermediates for various important compounds, etc.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6935481A JPS57185237A (en) | 1981-05-11 | 1981-05-11 | Preparation of 2,5-dihalo-1,4-benzoquinone-3,6-dicarboxylic diester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6935481A JPS57185237A (en) | 1981-05-11 | 1981-05-11 | Preparation of 2,5-dihalo-1,4-benzoquinone-3,6-dicarboxylic diester |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57185237A true JPS57185237A (en) | 1982-11-15 |
Family
ID=13400130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6935481A Pending JPS57185237A (en) | 1981-05-11 | 1981-05-11 | Preparation of 2,5-dihalo-1,4-benzoquinone-3,6-dicarboxylic diester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57185237A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4735744A (en) * | 1984-06-07 | 1988-04-05 | Mitsui Toatsu Chemicals, Incorporated | Novel benzoquinone derivatives and production process thereof as well as use as color-developers suitable for recording materials |
-
1981
- 1981-05-11 JP JP6935481A patent/JPS57185237A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4735744A (en) * | 1984-06-07 | 1988-04-05 | Mitsui Toatsu Chemicals, Incorporated | Novel benzoquinone derivatives and production process thereof as well as use as color-developers suitable for recording materials |
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