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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Hlavní autoři:	Saleh M. Al-Mousawi, Morsy A. El-Apasery
Médium:	Artigo
Jazyk:	Inglês
Vydáno:	MDPI AG 2012-05-01
Edice:	Molecules
Témata:	arylhydrazonopropanals arylazonicotinates pyridazinones cinnolines
On-line přístup:	http://www.mdpi.com/1420-3049/17/6/6547
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