CS261658B1 - Sposob přípravy 5-alkyItio-2-substituovaných-3-axo-2H-pyridazín-4-olov - Google Patents
Sposob přípravy 5-alkyItio-2-substituovaných-3-axo-2H-pyridazín-4-olov Download PDFInfo
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- CS261658B1 CS261658B1 CS874373A CS437387A CS261658B1 CS 261658 B1 CS261658 B1 CS 261658B1 CS 874373 A CS874373 A CS 874373A CS 437387 A CS437387 A CS 437387A CS 261658 B1 CS261658 B1 CS 261658B1
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- substituted
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- pyridazin
- chlorophenyl
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Abstract
Riešenie sa týká sposobu přípravy 5-alkyltioi-2-substituovaných-3-oxo-2H-pyridazín- -4-olov všeobecného vzorca I, v ktorom R* 1 znamená alkyl s 1 až 6 atómami uhlíka, fenyl, cyklobexyl, benzyl, tolyl, chlórfenyl, 3-trifluórmetyl-4-chlórfenyl, R-! znamená alkyl s 1 až 3 atómami uhlíka, záhrevom příslušného 4-alkoxy-2-substituovaného- -3-oxo-2H-pyridazín-5-tiolu alebo jeho soli s alkalickým kovám pri teplote 60 až 140 °C v prostředí protónakceptorného rozpúšťadla zo skupiny zahřňujúcej metanol, etanol, propanol, dimetylsulfoxid, dimetylformamid, trietylamín, nitril kyseliny octovej a v případe použitia soli s alkalickým kovom i v prostředí vody, pričom pri reakcii nastane elektrofllný prešmyk katlónu R2. Riešenie je možné využit v chemickom priemysle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS874373A CS261658B1 (sk) | 1987-06-15 | 1987-06-15 | Sposob přípravy 5-alkyItio-2-substituovaných-3-axo-2H-pyridazín-4-olov |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS874373A CS261658B1 (sk) | 1987-06-15 | 1987-06-15 | Sposob přípravy 5-alkyItio-2-substituovaných-3-axo-2H-pyridazín-4-olov |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS437387A1 CS437387A1 (en) | 1988-07-15 |
| CS261658B1 true CS261658B1 (sk) | 1989-02-10 |
Family
ID=5386316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS874373A CS261658B1 (sk) | 1987-06-15 | 1987-06-15 | Sposob přípravy 5-alkyItio-2-substituovaných-3-axo-2H-pyridazín-4-olov |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS261658B1 (sk) |
-
1987
- 1987-06-15 CS CS874373A patent/CS261658B1/sk unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS437387A1 (en) | 1988-07-15 |
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