JPS5738778A - Novel cyanopyrazine derivative - Google Patents
Novel cyanopyrazine derivativeInfo
- Publication number
- JPS5738778A JPS5738778A JP11324380A JP11324380A JPS5738778A JP S5738778 A JPS5738778 A JP S5738778A JP 11324380 A JP11324380 A JP 11324380A JP 11324380 A JP11324380 A JP 11324380A JP S5738778 A JPS5738778 A JP S5738778A
- Authority
- JP
- Japan
- Prior art keywords
- formula
- compound shown
- weeds
- give
- herbicide
- 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:A 2-cyanopyrazine derivative shown by the formula I (R1 is ethyl, or n-propyl; R2 is H, halogen, or methyl).
EXAMPLE: 2-Cyano-5-n-propylamino-6-m-chlorophenylpyrazine.
USE: A herbicide. Controlling the germination of seed of weeds, destroying the stalks and leaves of weeds, having improved effects of soil treatment of paddy field through flooding, foliar treatment of weeds in their growth period, and soil treatment of a plowed field, as a herbicide before and/or after germination, especially advantageous as a herbicide for a paddy field. Having no pytotoxicity to rice plant and effective for controlling an annual weed, e.g., "Echinochloa crus-galli" Beauv. var. "practicola" Ohwi., etc.
PROCESS: A 2,3-dicyanopyrazine derivative shown by the formula II is hydrolyzed with an alkali metal hydroxide, etc. in a solvent, e.g., methanol, etc., to give a compound shown by the formula III. This compound shown by the formula III is heated in an inert solvent, to give a compound shown by the formula IV, which is dehydrated to give a compound shown by the formula I.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11324380A JPS5738778A (en) | 1980-08-18 | 1980-08-18 | Novel cyanopyrazine derivative |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11324380A JPS5738778A (en) | 1980-08-18 | 1980-08-18 | Novel cyanopyrazine derivative |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5738778A true JPS5738778A (en) | 1982-03-03 |
JPS6241592B2 JPS6241592B2 (en) | 1987-09-03 |
Family
ID=14607189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11324380A Granted JPS5738778A (en) | 1980-08-18 | 1980-08-18 | Novel cyanopyrazine derivative |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5738778A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7691863B2 (en) * | 2006-10-04 | 2010-04-06 | Hoffman-La Roche Inc. | Pyrazine-2-carboxamide derivatives as CB2 receptor modulators |
-
1980
- 1980-08-18 JP JP11324380A patent/JPS5738778A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7691863B2 (en) * | 2006-10-04 | 2010-04-06 | Hoffman-La Roche Inc. | Pyrazine-2-carboxamide derivatives as CB2 receptor modulators |
Also Published As
Publication number | Publication date |
---|---|
JPS6241592B2 (en) | 1987-09-03 |
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