| Autor: |
Zvezdina, é. A., Zhdanova, M. P., Anisimova, O. S., Nechayuk, I. I. |
| Zdroj: |
Chemistry of Heterocyclic Compounds; December 1986, Vol. 22 Issue: 12 p1322-1326, 5p |
| Abstrakt: |
The reaction of 2,6-diphenylpyrylium perchlorate with semi- and thiosemicarbazides in ethanol leads to 1-carbamoyl- and 1-thiocarbamoyl-3-phenyl-5-phenacyl-4,5-dihydropyrazoles, the cyclization of which yields 2,5-diphenyl-7-oxo(thio)-pyrazolo[1,5-c]pyrimidines. The tautomeric form of the latter is established by comparing their electronic absorption spectra with the spectra of the methyl derivatives. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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