JPS5528908A - 2,3-dicyano-5-aminopyrazine derivative and its preparation - Google Patents
2,3-dicyano-5-aminopyrazine derivative and its preparationInfo
- Publication number
- JPS5528908A JPS5528908A JP10091778A JP10091778A JPS5528908A JP S5528908 A JPS5528908 A JP S5528908A JP 10091778 A JP10091778 A JP 10091778A JP 10091778 A JP10091778 A JP 10091778A JP S5528908 A JPS5528908 A JP S5528908A
- Authority
- JP
- Japan
- Prior art keywords
- dicyano
- derivative
- aminopyrazine
- give
- new material
- 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
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
NEW MATERIAL:2,3-Dicyano-5-aminopyrazine derivative I (R is H or lower alkyl).
EXAMPLE: 2,3-Dicyano-5-aminopyrazine.
USE: Intermediates for synthesis of herbicide applicable before and/or after germination, preferably intermediates of 2,3-dicyano-5-alkyl or arylamino-pyrazine herbicides for paddy field, having excellent herbicidal activity.
PROCESS: A 2,3-dicyano-5-hydroxypyrazine derivative II is halogenated with a halogenating agent, e.g. phosphorus oxychloride, etc., in an inert solvent or in the absence of a solvent to give a 2,3-dicyano-5-halopyrazine derivative III (X is halogen) (new material). The derivative III is reacted with aqueous or gaseous ammonia in an inert solvent at room temperature or under cooling for 10 min to 2 hr optionally in the presence of a hydrogen halidetrapping agent to give the desired compound I.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10091778A JPS5528908A (en) | 1978-08-21 | 1978-08-21 | 2,3-dicyano-5-aminopyrazine derivative and its preparation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10091778A JPS5528908A (en) | 1978-08-21 | 1978-08-21 | 2,3-dicyano-5-aminopyrazine derivative and its preparation |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5528908A true JPS5528908A (en) | 1980-02-29 |
JPS6125032B2 JPS6125032B2 (en) | 1986-06-13 |
Family
ID=14286683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10091778A Granted JPS5528908A (en) | 1978-08-21 | 1978-08-21 | 2,3-dicyano-5-aminopyrazine derivative and its preparation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5528908A (en) |
-
1978
- 1978-08-21 JP JP10091778A patent/JPS5528908A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6125032B2 (en) | 1986-06-13 |
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