JPS5724381A - Preparation of 2,3-dicyano-1,4-dithia-9,10-anthraquinone - Google Patents
Preparation of 2,3-dicyano-1,4-dithia-9,10-anthraquinoneInfo
- Publication number
- JPS5724381A JPS5724381A JP9627980A JP9627980A JPS5724381A JP S5724381 A JPS5724381 A JP S5724381A JP 9627980 A JP9627980 A JP 9627980A JP 9627980 A JP9627980 A JP 9627980A JP S5724381 A JPS5724381 A JP S5724381A
- Authority
- JP
- Japan
- Prior art keywords
- dicyano
- naphthoquinone
- dithia
- anthraquinone
- pref
- 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
- Heterocyclic Compounds Containing Sulfur Atoms (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
PURPOSE: To prepare the titled compound useful as a fungicide, in high yield and purity, by reacting 1,4-naphthoquinone with an alkali metal salt of 1,2-dicyano- 1,2-dimercaptoethene in an aqueous medium controlled at a specific pH.
CONSTITUTION: The titled 2,3-dicyano-1,4-dithia-9,10-anthraquinone is prepared by reacting 1,4-naphthoquinone with an alkali metal salt (e.g. Li, Na or K salt) of 1,2-dicyano-1,2-mercaptoethene in an aqueous medium controlled at pH 5.1W5.8, pref. about 5.3. The reaction is carried out at 0W10°C, pref. 0W5°C. The 1,4- naphthoquinone used is fine powder (32 mesh through). If the pH value is out of the above range, the yield becomes poor.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9627980A JPS5724381A (en) | 1980-07-16 | 1980-07-16 | Preparation of 2,3-dicyano-1,4-dithia-9,10-anthraquinone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9627980A JPS5724381A (en) | 1980-07-16 | 1980-07-16 | Preparation of 2,3-dicyano-1,4-dithia-9,10-anthraquinone |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5724381A true JPS5724381A (en) | 1982-02-08 |
JPH0128031B2 JPH0128031B2 (en) | 1989-05-31 |
Family
ID=14160678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9627980A Granted JPS5724381A (en) | 1980-07-16 | 1980-07-16 | Preparation of 2,3-dicyano-1,4-dithia-9,10-anthraquinone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5724381A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003074737A (en) * | 2001-09-03 | 2003-03-12 | Nok Corp | Valve device and method of manufacturing valve device |
-
1980
- 1980-07-16 JP JP9627980A patent/JPS5724381A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003074737A (en) * | 2001-09-03 | 2003-03-12 | Nok Corp | Valve device and method of manufacturing valve device |
Also Published As
Publication number | Publication date |
---|---|
JPH0128031B2 (en) | 1989-05-31 |
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