JPS5643270A - Production of 4-benzoyl-5-hydroxypyrazole - Google Patents

Production of 4-benzoyl-5-hydroxypyrazole

Info

Publication number
JPS5643270A
JPS5643270A JP11777479A JP11777479A JPS5643270A JP S5643270 A JPS5643270 A JP S5643270A JP 11777479 A JP11777479 A JP 11777479A JP 11777479 A JP11777479 A JP 11777479A JP S5643270 A JPS5643270 A JP S5643270A
Authority
JP
Japan
Prior art keywords
formula
compound
hydroxypyrazole
benzoyl
formula iii
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.)
Pending
Application number
JP11777479A
Other languages
Japanese (ja)
Inventor
Ryuzo Nishiyama
Kanichi Fujikawa
Takahiro Haga
Tetsuji Nishikawa
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.)
Ishihara Sangyo Kaisha Ltd
Original Assignee
Ishihara Sangyo Kaisha 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 Ishihara Sangyo Kaisha Ltd filed Critical Ishihara Sangyo Kaisha Ltd
Priority to JP11777479A priority Critical patent/JPS5643270A/en
Publication of JPS5643270A publication Critical patent/JPS5643270A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: The intermolecular rearrangement between 4-benzoyl-5-benzoyloxypyrazole and 5-hydroxypyrazole is conducted in an inert solvent in the presence of a basic substance to produce the titled compound used as a herbicide in a short time in high yield.
CONSTITUTION: The reaction between 4-benzoyl-5-benzoyloxypyrazole of formula I (R is alkyl; X is halogen, nitro, trifluoromethyl; Y is halogen, nitron trifluoro- methyl, methylsulfonyl) and 5-hydroxypyrazole of formula II is conducted in an inert solvent in the presence of a basic substance to give the objective compound of formula III. Furhter, a part of the whole of the compound of formula III is made to react with a benzoic acid of formula IV or its reactive derivative to form the compound of formula I, which is recycled for the formation of the objective compound of formula III.
USE: Synthetic intermediate of herbicide.
COPYRIGHT: (C)1981,JPO&Japio
JP11777479A 1979-09-13 1979-09-13 Production of 4-benzoyl-5-hydroxypyrazole Pending JPS5643270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11777479A JPS5643270A (en) 1979-09-13 1979-09-13 Production of 4-benzoyl-5-hydroxypyrazole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11777479A JPS5643270A (en) 1979-09-13 1979-09-13 Production of 4-benzoyl-5-hydroxypyrazole

Publications (1)

Publication Number Publication Date
JPS5643270A true JPS5643270A (en) 1981-04-21

Family

ID=14719985

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11777479A Pending JPS5643270A (en) 1979-09-13 1979-09-13 Production of 4-benzoyl-5-hydroxypyrazole

Country Status (1)

Country Link
JP (1) JPS5643270A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103304480A (en) * 2013-07-09 2013-09-18 黑龙江胜农科技开发有限公司 Benzoyl parazole compound as well as synthesis method thereof and application of same as herbicide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103304480A (en) * 2013-07-09 2013-09-18 黑龙江胜农科技开发有限公司 Benzoyl parazole compound as well as synthesis method thereof and application of same as herbicide

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