Studies with quinolines: New synthetic routes to 4H,5H,6H,9H-benzo[ij]pyrano[2,3-b]quinolizine-8-one, 4H-pyrano[2,3-b]pyridine, 2H-pyran-2-one and pyranopyridoquinoline derivatives

Autor:	Fathy Mohamad Abdel Aziz El-Taweel
Rok vydání:	2005
Předmět:	chemistry.chemical_compound chemistry Pyran Organic Chemistry Pyridine Hippuric acid Quinolizine Organic chemistry Dimethylformamide-dimethylacetal
Zdroj:	Journal of Heterocyclic Chemistry. 42:943-946
ISSN:	1943-5193 0022-152X
DOI:	10.1002/jhet.5570420529
Popis:	Several new benzo[ij]pyrano[2,3-b]quinolizine-8-ones 5 and 4H-pyrano[2,3-b]pyridine 8 derivatives were synthesized from 4-hydroxyquinolines 1. Reacting 3-acetyl-4-hydroxy-1-phenyl-1H-quinoline-2-one with dimethylformamide dimethylacetal afforded 3-(3-Dimethylarnino-acryloyl)-4-hydroxy-1-phenyl-1H-quinolin-2-one 9. This reacted with hippuric acid and diethyl 3-oxoglutarate to give 2H-pyran-2-one 13 and pyranopyridoquinoline 17 respectively.
Databáze:	OpenAIRE
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