| Autor: |
Usachev, Boris I., Sosnovskikh, Vyacheslav Ya., Shafeev, Mikhail A., Röschenthaler, Gerd-Volker |
| Předmět: |
|
| Zdroj: |
Phosphorus, Sulfur & Silicon & the Related Elements; May2005, Vol. 180 Issue 5/6, p1315-1319, 5p, 2 Diagrams |
| Abstrakt: |
Alkyl 2-mercaptophenyl ketones react with trifluoroacetic anhydride in the presence of triethylamine to give 2-(trifluoromethyl)-4H-thiochromen-4-ones, which are transformed into the corresponding pyrazoles by treatment with hydrazine hydrate and into 1,1-dioxides by oxidation with H 2 O 2 in AcOH. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
