cheminform abstract: β-oxoanilides in heterocyclic synthesis: an expeditious synthesis of new...

ChemInform 2009, 40, issue 15 © 2009 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim www.cheminform.wiley-vch.de Pyridine derivatives R 0380 β-Oxoanilides in Heterocyclic Synthesis: An Expeditious Synthesis of New Poly- functionally Substituted Pyridine and Pyrazole Derivatives. — The potential of amide (I) for the synthesis of substituted pyridones from enaminone (III) utilizing active methylene reagents is explored. In addition, condensation of anilide (I) with triethyl orthoformate yields the ethoxy methylene derivative (XV) whose reaction with active methylene reagents and hydrazines affords products identical in all respects to those synthesized from (III). — (HUSEIN, A. M.; HARB, A. A.; MOUSA, I. A.; J. Heterocycl. Chem. 45 (2008) 6, 1819-1823; Dep. Chem., Fac. Sci., Al-Azhar Univ., Assuit 71524, Egypt; Eng.) — H. Hoennerscheid 15- 144

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Page 1: ChemInform Abstract: β-Oxoanilides in Heterocyclic Synthesis: An Expeditious Synthesis of New Polyfunctionally Substituted Pyridine and Pyrazole Derivatives

www.cheminform.wiley-vch.de

200915.fm Seite 156 Montag, 16. März 2009 11:49 11

Pyridine derivativesR 0380 β-Oxoanilides in Heterocyclic Synthesis: An Expeditious Synthesis of New Poly-

functionally Substituted Pyridine and Pyrazole Derivatives. — The potential of amide (I) for the synthesis of substituted pyridones from enaminone (III) utilizing active methylene reagents is explored. In addition, condensation of anilide (I) with triethyl orthoformate yields the ethoxy methylene derivative (XV) whose reaction with active methylene reagents and hydrazines affords products identical in all respects to those synthesized from (III). — (HUSEIN, A. M.; HARB, A. A.; MOUSA, I. A.; J. Heterocycl. Chem. 45 (2008) 6, 1819-1823; Dep. Chem., Fac. Sci., Al-Azhar Univ., Assuit 71524, Egypt; Eng.) — H. Hoennerscheid

15- 144

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