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Paper | Regular issue | Vol 100, No. 7, 2020, pp.1048-1064
Published online, 19th May, 2020
DOI: 10.3987/COM-20-14270
Reactivity of 6-Ethyl-4,5-dioxo-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carboxaldehyde towards Some Nucleophilic Reagents

Magdy A. Ibrahim,* Mohamed Abass, Hany M. Hassanin, and Al-Shimaa Badran

*Department of Chemistry, Faculty of Education, Ain Shams University, Roxy 11757, Cairo, Egypt

Abstract

6-Ethyl-4,5-dioxo-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carbox-aldehyde (1) was prepared and utilized as a starting material. Carboxaldehyde 1 was subjected to react with a diversity of carbon nucleophiles producing a variety of condensation products as well as heterocyclic rings linked pyrano[3,2-c]quinolines. Also, reaction of carboxaldehyde 1 with p-toluidine, heterocyclic amines and some hydrazine derivatives produced a variety of products. The structures of the new synthesized products were deduced on the basis of their analytical and spectral data.