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Ionic liquid catalyzed expeditious synthesis of 2-aryl-2,3-dihydroquinolin-4(1H)-ones and 2-aryl-2,3-dihydro-4H-chromen-4-ones under microwave irradiation

✍ Scribed by Dalip Kumar; Gautam Patel; Anil Kumar; Ram K. Roy

Publisher: Journal of Heterocyclic Chemistry
Year: 2009
Tongue: English
Weight: 80 KB
Volume: 46
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.123

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✦ Synopsis

Abstract

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A facile and convenient synthesis of 2‐aryl‐2,3‐dihydroquinolin‐4(1__H__)‐one and 2‐aryl‐2,3‐dihydro‐4__H__‐chromen‐4‐one has been described using ionic liquid catalyzed intramolecular cyclization of the corresponding 2′‐aminochalcones and 2′‐hydroxychalcones, respectively. The rapid and fairly general protocol affords product in good yield. Ionic liquid, 1‐butyl‐3‐methylimidazolium tetrafluoroborate, was recovered and reused without loosing its efficiency. J. Heterocyclic Chem., (2009)

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