Condensation Reactions of 3-Oxo-2-arylhydrazonopropanals with Active Methylene Reagents: Formation of 2-Hydroxy- and 2-Amino-6-substituted-5-arylazonicotinates and Pyrido[3,2-c]cinnolines via 6π-Electrocyclization Reactions
3-Oxo-3-phenyl-2-(<em>p</em>-tolylhydrazono)propanal (<strong>1a</strong>) undergoes condensation with ethyl cyanoacetate in acetic acid in the presence of ammonium acetate to yield either 2-hydroxy-6-phenyl-5-<em>p</em>-tolylazonicotinic acid ethyl ester (<str...
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| Autors principals: | , |
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| Format: | Artigo |
| Idioma: | Inglês |
| Publicat: |
MDPI AG
2012-05-01
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| Col·lecció: | Molecules |
| Matèries: | |
| Accés en línia: | http://www.mdpi.com/1420-3049/17/6/6547 |
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