Ionic liquid catalyzed expeditious synthesis of 2-aryl-2,3-dihydroquinolin-4(1<i>H</i>)-ones and 2-aryl-2,3-dihydro-4<i>H</i>-chromen-4-ones under microwave irradiation
作者:Dalip Kumar、Gautam Patel、Anil Kumar、Ram K. Roy
DOI:10.1002/jhet.123
日期:2009.7
A facile and convenient synthesis of 2-aryl-2,3-dihydroquinolin-4(1H)-one and 2-aryl-2,3-dihydro-4H-chromen-4-one has been described using ionicliquidcatalyzed intramolecular cyclization of the corresponding 2′-aminochalcones and 2′-hydroxychalcones, respectively. The rapid and fairly general protocol affords product in good yield. Ionicliquid, 1-butyl-3-methylimidazolium tetrafluoroborate, was