2026-04-29T17:57:51Z https://www.eurjchem.com/index.php/eurjchem/oai

oai:ojs.www.eurjchem.com:article/91 2011-04-06T05:27:52Z eurjchem:ART driver

Novel heterocyclic derivatives of pyrano[3,2-c]quinolinone from 3-(1-ethy1-4-hydroxy-2-oxo-2(1H)-quinolin-3-yl)-3-oxopropanoic acid Ibrahim, Magdy Ahmed Hassanin, Hany Mohamed Gabr, Yassin Abdel-Allah Alnamer, Youssef Abdel-Salam β-ketoacid Quinolinone Chromone Cyclocondensation Knoevenagel condensation 3-(1-Ethyl-4-hydroxy-2-oxo-2(1H)-quinolin-3-yl)-3-oxopropanoic acid (2) has been synthesized. The chemical behaviour of β-ketoacid 2 was studied towards condensation reactions with salicylaldelyde, 2-hydroxy-1-naphthaldehyde, 1-phenyl-4-hydroxy-2-oxo-quinoline-3-carboxaldehyde, 2-hydroxy-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxalde-hyde, 2-amino-3-formylchromone and its 8-allyl analog, 3-cyanochromone and its 8-allyl analog. Structures of the newly synthesized products have been deduced from their elemental analysis and spectral data. Atlanta Publishing House LLC 2010-09-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://www.eurjchem.com/index.php/eurjchem/article/view/91 10.5155/eurjchem.1.3.195-199.91 European Journal of Chemistry; Vol. 1 No. 3 (2010): September 2010; 195-199 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/91/PDF