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Paper | Regular issue | Vol 87, No. 2, 2013, pp.369-380
Published online, 20th December, 2012
DOI: 10.3987/COM-12-12639
Synthesis of Some Novel Binuclear Heterocyclic Compounds from 6-Ethyl-3-nitropyrano[3,2-c]quinoline-4,5(6H)-dione

Hany M. Hassanin* and Dalia Abdel-Kader

*Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo 11711, Egypt

Abstract

6-Ethyl-3-nitropyrano[3,2-c]quinoline-4,5(6H)-dione (4) was synthesized and its reactivity towards some 1,2-, 1,3-, and 1,4-binucleophiles was investigated. Ring transformation via opening of the γ-pyrone ring and heterocyclizations through out these reactions led to certain interesting five, six, and seven-membered heterocyclic substituents, viz. pyrazolyl, pyridyl, pyrimidyl, diazepinyl, and thiazepinyl at position-3 of quinolin-2-one moiety.