JPS5643270A - Production of 4-benzoyl-5-hydroxypyrazole - Google Patents
Production of 4-benzoyl-5-hydroxypyrazoleInfo
- 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
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
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)
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 |
-
1979
- 1979-09-13 JP JP11777479A patent/JPS5643270A/en active Pending
Cited By (1)
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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