JPS5643271A - Production of 4-benzoyl-5-hydroxypyrazole - Google Patents
Production of 4-benzoyl-5-hydroxypyrazoleInfo
- Publication number
- JPS5643271A JPS5643271A JP11804379A JP11804379A JPS5643271A JP S5643271 A JPS5643271 A JP S5643271A JP 11804379 A JP11804379 A JP 11804379A JP 11804379 A JP11804379 A JP 11804379A JP S5643271 A JPS5643271 A JP S5643271A
- 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 effected in an inert solvent in the presence of aluminum chloride to produce readily the titled compound.
CONSTITUTION: 4-Benzoyl-5-benzoyloxypyrazole of formula I (R is alkyl; X is halogen, nitro; Y is halogen, nitro, methylsulfonyl) and 5-hydroxypyrazole of formula II are made to react in an inert solvent in the presence of aluminum chloride to form 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 give the compound of formula I, the starting compound, which is recycled to the reaction for the formation of the objective compound of formula III.
EFFECT: The reaction time can be shortened and the yield is improved.
USE: Herbicide or its intermediate.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11804379A JPS5643271A (en) | 1979-09-14 | 1979-09-14 | Production of 4-benzoyl-5-hydroxypyrazole |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11804379A JPS5643271A (en) | 1979-09-14 | 1979-09-14 | Production of 4-benzoyl-5-hydroxypyrazole |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5643271A true JPS5643271A (en) | 1981-04-21 |
Family
ID=14726615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11804379A Pending JPS5643271A (en) | 1979-09-14 | 1979-09-14 | Production of 4-benzoyl-5-hydroxypyrazole |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5643271A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4926770A (en) * | 1988-01-22 | 1990-05-22 | Janome Sewing Machine Company Limited | Needle hole guide mechanism for zigzag sewing machine |
-
1979
- 1979-09-14 JP JP11804379A patent/JPS5643271A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4926770A (en) * | 1988-01-22 | 1990-05-22 | Janome Sewing Machine Company Limited | Needle hole guide mechanism for zigzag sewing machine |
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