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A one-pot synthesis of the 1-benzopyrano[2,3-b]pyridine moiety from 2-(alkyl/arylamino)-4-oxo-4H-1-benzopyran-3-carbaldehyde

✍ Scribed by Sourav Maiti; Suman Kalyan Panja; Chandrakanta Bandyopadhyay

Publisher: Journal of Heterocyclic Chemistry
Year: 2010
Tongue: English
Weight: 402 KB
Volume: 47
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.397

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✦ Synopsis

Abstract

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2‐(Alkyl/arylamino)chromone‐3‐carbaldehyde reacts with Meldrum's acid, hippuric acid, 4‐hydroxycoumarin, diethyl malonate, ethyl acetoacetate, or ethyl benzoylacetate to produce 1‐benzopyrano[2,3‐b]pyridine‐2,5‐dione moiety, but ethyl cyanoacetate and malononitrile react differently. J. Heterocyclic Chem., (2010).

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