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Ionic liquid catalyzed expeditious synthesis of 2‐aryl‐2,3‐dihydroquinolin‐4(1 H )‐ones and 2‐aryl‐2,3‐dihydro‐4 H ‐chromen‐4‐ones under microwave irradiation
Author(s) -
Kumar Dalip,
Patel Gautam,
Kumar Anil,
K. Roy Ram
Publication year - 2009
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.123
Subject(s) - ionic liquid , chemistry , tetrafluoroborate , aryl , intramolecular force , yield (engineering) , combinatorial chemistry , catalysis , medicinal chemistry , organic chemistry , alkyl , materials science , metallurgy
AbstractA 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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