JPS54115374A - Pyrazoline derivatives and their preparation - Google Patents
Pyrazoline derivatives and their preparationInfo
- Publication number
- JPS54115374A JPS54115374A JP2150878A JP2150878A JPS54115374A JP S54115374 A JPS54115374 A JP S54115374A JP 2150878 A JP2150878 A JP 2150878A JP 2150878 A JP2150878 A JP 2150878A JP S54115374 A JPS54115374 A JP S54115374A
- Authority
- JP
- Japan
- Prior art keywords
- formula
- keto
- compound
- reacted
- acidic conditions
- 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
Links
Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
NEW MATERIAL:Pryazoline derivatives of formulas I, II, and III: (R1 is methyl or phenyl group; R2 is H, 1W10C alkyl, or aralkyl group; R3 is H, 1W4C alkyl, or alkenyl group), which are tautomers.
EXAMPLE: 1-Thio carbomoyl-3-methylpyrazoline-5-one.
USE: Aricultural and horticultural fungicides, having a wide range of antibacterial activity on agriculatural and horticultural pathogenic fungi, particularly effective for blast of rice plants powdery meldew and anthracnose of cucumbers.
PROCESS: A β-keto-acid ester of formula IV: (Z is OC2H5) or a β-keto-acid amide (Z is NH2, NHCH3, etc.) is reacted with a thiosemicarbazide of formula V under acidic conditions to form the compound of formula I, II or III. Alternatively, the compound of formula IV is reacted with the compound of formula V under neutral or weakly acidic conditions to give a β-keto-acid ester thiosemicarbazone, which is reacted under strongly acidic conditions.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2150878A JPS54115374A (en) | 1978-02-28 | 1978-02-28 | Pyrazoline derivatives and their preparation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2150878A JPS54115374A (en) | 1978-02-28 | 1978-02-28 | Pyrazoline derivatives and their preparation |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54115374A true JPS54115374A (en) | 1979-09-07 |
JPS6334148B2 JPS6334148B2 (en) | 1988-07-08 |
Family
ID=12056901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2150878A Granted JPS54115374A (en) | 1978-02-28 | 1978-02-28 | Pyrazoline derivatives and their preparation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54115374A (en) |
-
1978
- 1978-02-28 JP JP2150878A patent/JPS54115374A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6334148B2 (en) | 1988-07-08 |
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