Formation of Pyrazole Derivatives from [beta]-Substituted Pyridinium Salts
Treatment of 1-methyl-3-phenylhydrazonomethyl pyridinium iodides (2a-f) with a base gave pyrazole derivatives (3 and 4) with expulsion of the pyridine ring. A possible mechanism for the formation of pyrazole derivatives id discussed.
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| Veröffentlicht in: | Chemical & pharmaceutical bulletin 1980-04, Vol.28 (4), p.1265 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Treatment of 1-methyl-3-phenylhydrazonomethyl pyridinium iodides (2a-f) with a base gave pyrazole derivatives (3 and 4) with expulsion of the pyridine ring. A possible mechanism for the formation of pyrazole derivatives id discussed. |
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| ISSN: | 0009-2363 1347-5223 |