JPS5762261A - Preparation of 1,3-dimethyl-4-benzoyl-5-hydroxypyrazole compound - Google Patents
Preparation of 1,3-dimethyl-4-benzoyl-5-hydroxypyrazole compoundInfo
- Publication number
- JPS5762261A JPS5762261A JP13805280A JP13805280A JPS5762261A JP S5762261 A JPS5762261 A JP S5762261A JP 13805280 A JP13805280 A JP 13805280A JP 13805280 A JP13805280 A JP 13805280A JP S5762261 A JPS5762261 A JP S5762261A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- methyl
- benzoyl
- hydrazine
- dimethyl
- 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: To prepare the titled compound, easily, by reacting a 1-methyl-1-alkoxy- carbonyl hydrazine compound with a 1-benzoylacetone compound, and then cyclizing the reaction product in the presence of a basic substance.
CONSTITUTION: A 1-methyl-1-alkoxycarbonyl hydrazine compound is made to react with a 1-benzyl-acetone compound in the presence of a catalyst such as hydrochloric acid, formic acid, etc. to obtain a 1-methyl-1-alkoxycarbonyl-2-(2-benzoyl) isopropyl- idene hydrazine compound, which is cyclized in the presence of a basic substance (e.g. sodium ethylate) to afford the objective compound. The 1-methyl-1-alkoxy- carbonyl hydrazine used as a raw material can be prepared, e.g., by condensing methylhydrazine with a dialkyl carbonate.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13805280A JPS5762261A (en) | 1980-10-02 | 1980-10-02 | Preparation of 1,3-dimethyl-4-benzoyl-5-hydroxypyrazole compound |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13805280A JPS5762261A (en) | 1980-10-02 | 1980-10-02 | Preparation of 1,3-dimethyl-4-benzoyl-5-hydroxypyrazole compound |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5762261A true JPS5762261A (en) | 1982-04-15 |
Family
ID=15212859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13805280A Pending JPS5762261A (en) | 1980-10-02 | 1980-10-02 | Preparation of 1,3-dimethyl-4-benzoyl-5-hydroxypyrazole compound |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5762261A (en) |
-
1980
- 1980-10-02 JP JP13805280A patent/JPS5762261A/en active Pending
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