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JPS55364A - Preparation of pyrazole derivative - Google Patents

Preparation of pyrazole derivative

Info

Publication number
JPS55364A
JPS55364A JP4167179A JP4167179A JPS55364A JP S55364 A JPS55364 A JP S55364A JP 4167179 A JP4167179 A JP 4167179A JP 4167179 A JP4167179 A JP 4167179A JP S55364 A JPS55364 A JP S55364A
Authority
JP
Japan
Prior art keywords
formula
compound
acid
preparation
chloride
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
JP4167179A
Other languages
Japanese (ja)
Other versions
JPS604821B2 (en
Inventor
Takao Konotsune
Katsuhiko Kawakubo
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 JP54041671A priority Critical patent/JPS604821B2/en
Publication of JPS55364A publication Critical patent/JPS55364A/en
Publication of JPS604821B2 publication Critical patent/JPS604821B2/en
Expired legal-status Critical Current

Links

Abstract

NEW MATERIAL:Pyrazole derivatives of formula I (R1, R2 are straight-chained or branched alkyl; X is Cl, Br, I).
EXAMPLE: 5-Chloro-4-(2,4-diechlorobenzoyl)-1,3-dimethylpyrazole.
USE: A synthetic intermediate for herbicide.
PREPARATION: The reaction between a compound of formula II and a reactive derivative of benzoic acid of formula III (acid halide, acid anhydride, preferably acid chloride, especially 2,4-dichlorobenzoyl chloride is effected in the presence of a Lewis acid catalyst, preferably aluminum chloride to prepare the objective compound of formula I. The resulting compound is heated along with an alkali metal hydroxide or hydrosulfide to give the compound of formula V used for a herbicide.
COPYRIGHT: (C)1980,JPO&Japio
JP54041671A 1979-04-06 1979-04-06 Method for producing pyrazole derivatives Expired JPS604821B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54041671A JPS604821B2 (en) 1979-04-06 1979-04-06 Method for producing pyrazole derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54041671A JPS604821B2 (en) 1979-04-06 1979-04-06 Method for producing pyrazole derivatives

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP3493974A Division JPS5436648B2 (en) 1974-03-28 1974-03-28

Publications (2)

Publication Number Publication Date
JPS55364A true JPS55364A (en) 1980-01-05
JPS604821B2 JPS604821B2 (en) 1985-02-06

Family

ID=12614856

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54041671A Expired JPS604821B2 (en) 1979-04-06 1979-04-06 Method for producing pyrazole derivatives

Country Status (1)

Country Link
JP (1) JPS604821B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4960897A (en) * 1987-03-04 1990-10-02 Mitsubishi Kasei Corporation Herbicide containing 1-(halogenomethyl)-vinyl pyridines

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5029477A (en) * 1973-03-09 1975-03-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5029477A (en) * 1973-03-09 1975-03-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4960897A (en) * 1987-03-04 1990-10-02 Mitsubishi Kasei Corporation Herbicide containing 1-(halogenomethyl)-vinyl pyridines

Also Published As

Publication number Publication date
JPS604821B2 (en) 1985-02-06

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