1-Alkylpyrazoles and 1-alkyl-5-chloropyrazoles from halovinyl ketones and 1,1-dialkylhydrazines
✍ Scribed by G. V. Bozhenkov; V. A. Savosik; L. V. Klyba; E. R. Zhanchipova; A. N. Mirskova; G. G. Levkovskaya
- Book ID
- 111464769
- Publisher
- SP MAIK Nauka/Interperiodica
- Year
- 2008
- Tongue
- English
- Weight
- 214 KB
- Volume
- 44
- Category
- Article
- ISSN
- 1070-4280
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The reaction of enolisable ketones with I-alkyl-1-cyanohydraziaes leads to the corresponding cyanohydrazones. These compounds cyclise under thermal or mildly basic conditions, furnishing the corresponding 5-aminopyrazoks in gocd yield. In some cases, the hydrazones cannot be isolated, and the pyrazo
## Abstract Successful syntheses of 2,4‐dichlorophenyl 2‐(1‐methyl‐5‐imidazolyl)ethyl and 2,4‐dichlorophenyl 3‐(1‐methyl‐5‐imidazolyl)propyl ketones are described. In addition, syntheses of 2,4‐dichlorophenyl and 4‐chlorophenyl 3‐(1‐methyl‐1__H__‐5‐tetrazolyl)propyl ketones are reported.