JPS5775974A - Pyridazinone derivative and its preparation - Google Patents

Pyridazinone derivative and its preparation

Info

Publication number
JPS5775974A
JPS5775974A JP12923981A JP12923981A JPS5775974A JP S5775974 A JPS5775974 A JP S5775974A JP 12923981 A JP12923981 A JP 12923981A JP 12923981 A JP12923981 A JP 12923981A JP S5775974 A JPS5775974 A JP S5775974A
Authority
JP
Japan
Prior art keywords
agent
blight
pyridazinone
cucumber
reacted
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
JP12923981A
Other languages
Japanese (ja)
Other versions
JPS5850217B2 (en
Inventor
Teruomi Jojima
Yukiyoshi Takahi
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.)
Sankyo Co Ltd
Original Assignee
Sankyo 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 Sankyo Co Ltd filed Critical Sankyo Co Ltd
Priority to JP12923981A priority Critical patent/JPS5850217B2/en
Publication of JPS5775974A publication Critical patent/JPS5775974A/en
Publication of JPS5850217B2 publication Critical patent/JPS5850217B2/en
Expired legal-status Critical Current

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  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

NEW MATERIAL:A compound shown by the formulaI(R1 and R2 are halogen; R3 is lower alkyl or lower alkoxy) or its salt.
EXAMPLE: 6-(3,5-Dichloro-4-methylphenyl)-3(2H)pyridazinone.
USE: A fungicide for agriculture and gardening. Especially strongly controlling sheath blight of rice plant, an important blight or rice plant by using the titled compound as an application agent or an agent for application to the surface of water, effective against damping off of crops, e.g., beet, cotton, cucumber, etc. caused by Rhizotonia solani, etc. by using the titled compound as a soil treatment or seed treatment agent, and also effective against southern blight of egg-plant, cucumber, etc., soil infectious disease, e.g., potato black mark, etc.
PROCESS: A 6-substituted phenyl-4,5-dihydro-3(2H)pyridazinone shown by the formula II is reacted with a dehydrogenating agent or a compound shown by the formula III (at least one of R1' and R2' is H, and the other is halogen) is reacted with a halogenating agent.
COPYRIGHT: (C)1982,JPO&Japio
JP12923981A 1981-08-18 1981-08-18 Pyridazinone derivatives and their production method Expired JPS5850217B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12923981A JPS5850217B2 (en) 1981-08-18 1981-08-18 Pyridazinone derivatives and their production method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12923981A JPS5850217B2 (en) 1981-08-18 1981-08-18 Pyridazinone derivatives and their production method

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP51036453A Division JPS584681B2 (en) 1975-09-11 1976-04-01 Fungicide for agriculture and horticulture

Publications (2)

Publication Number Publication Date
JPS5775974A true JPS5775974A (en) 1982-05-12
JPS5850217B2 JPS5850217B2 (en) 1983-11-09

Family

ID=15004622

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12923981A Expired JPS5850217B2 (en) 1981-08-18 1981-08-18 Pyridazinone derivatives and their production method

Country Status (1)

Country Link
JP (1) JPS5850217B2 (en)

Also Published As

Publication number Publication date
JPS5850217B2 (en) 1983-11-09

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