JPS5545647A - Novel 2,3-dicyanopirazine derivative, its preparation, and herbicide containing the compound as effective component - Google Patents

Novel 2,3-dicyanopirazine derivative, its preparation, and herbicide containing the compound as effective component

Info

Publication number
JPS5545647A
JPS5545647A JP11914078A JP11914078A JPS5545647A JP S5545647 A JPS5545647 A JP S5545647A JP 11914078 A JP11914078 A JP 11914078A JP 11914078 A JP11914078 A JP 11914078A JP S5545647 A JPS5545647 A JP S5545647A
Authority
JP
Japan
Prior art keywords
compound
halogen
derivative
herbicide
dicyanopirazine
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
Application number
JP11914078A
Other languages
Japanese (ja)
Other versions
JPS6148506B2 (en
Inventor
Tetsuo Takematsu
Hirozo Segawa
Takama Miura
Toshihide Ataka
Michio Chatani
Akira Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyowa Gas Chemical Industry Co Ltd
Original Assignee
Kyowa Gas Chemical Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kyowa Gas Chemical Industry Co Ltd filed Critical Kyowa Gas Chemical Industry Co Ltd
Priority to JP11914078A priority Critical patent/JPS5545647A/en
Publication of JPS5545647A publication Critical patent/JPS5545647A/en
Publication of JPS6148506B2 publication Critical patent/JPS6148506B2/ja
Granted legal-status Critical Current

Links

Abstract

NEW MATERIAL:2,3-Dicyanopyrazine derivative of formula I (R is halogen or lower alkyl; A is halogen or OH).
EXAMPLE: 2,3-Dicyano-5-hydroxy-6-(3-chlorophenyl)pyrazine.
USE: Herbicide and its intermediate. Selective harbicidal activity. forms a solid herbicidal layer to the surface of a paddy field, and effective as a herbicide for paddy rice field.
PROCESS: The compound IV is prepared by reacting diaminomaleonitrile II with a substituted-phenyl glyoxylic acid III in a solvent such as water or methanol, in the presence of dehydrative condensation catalyst such as HCl or acetic acid, at room temperature to 150°C. The compound I wherein A is halogen, is prepared by reacting the compound IV with a halogenating agent.
COPYRIGHT: (C)1980,JPO&Japio
JP11914078A 1978-09-29 1978-09-29 Novel 2,3-dicyanopirazine derivative, its preparation, and herbicide containing the compound as effective component Granted JPS5545647A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11914078A JPS5545647A (en) 1978-09-29 1978-09-29 Novel 2,3-dicyanopirazine derivative, its preparation, and herbicide containing the compound as effective component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11914078A JPS5545647A (en) 1978-09-29 1978-09-29 Novel 2,3-dicyanopirazine derivative, its preparation, and herbicide containing the compound as effective component

Publications (2)

Publication Number Publication Date
JPS5545647A true JPS5545647A (en) 1980-03-31
JPS6148506B2 JPS6148506B2 (en) 1986-10-24

Family

ID=14753910

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11914078A Granted JPS5545647A (en) 1978-09-29 1978-09-29 Novel 2,3-dicyanopirazine derivative, its preparation, and herbicide containing the compound as effective component

Country Status (1)

Country Link
JP (1) JPS5545647A (en)

Also Published As

Publication number Publication date
JPS6148506B2 (en) 1986-10-24

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