| Autor: |
Kotovskaya, S., Perova, N., Baskakova, Z., Romanova, S., Charushin, V., Chupakhin, O. |
| Zdroj: |
Russian Journal of Organic Chemistry; Apr2001, Vol. 37 Issue 4, p564-569, 6p |
| Abstrakt: |
2-Mercapto-5,6-difluorobenzimidazole reacts with aliphatic and alicyclic ketones in acetic acid in the presence of catalytic amount of sulfuric acid to afford fluorinated derivatives of 2,3-disubstituted benz[4,5]imidazo[2,1-b][1,3]thiazoles. Reaction with aromatic α-haloketones occurs in another way: to furnish 2-phenylacylthio-5,6-difluorobenzimidazoles that in the system acetic anhydride-pyridine undergo cyclization into the corresponding fluorinated derivatives of benz[4,5]imidazo[2,1-b][1,3]thiazoles. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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