Ionic Liquid-Promoted Regiospecific Friedlander Annulation: Novel Synthesis of Quinolines and Fused Polycyclic Quinolines
作者:Sanjay S. Palimkar、Shapi A. Siddiqui、Thomas Daniel、Rajgopal. J. Lahoti、Kumar V. Srinivasan
DOI:10.1021/jo035153u
日期:2003.11.1
Several room-temperature ionic liquids (ILs) based on 1-butylimidazolium salts with varying anions were synthesized and evaluated for the preparation of biologically active substituted quinolines and fused polycyclic quinolines using the Friedlander heteroannulation reaction. On screening, 1-butylimidazolium tetrafluoroborate [Hbim]BF4 was found to be the best ionic liquid for the heteroannulation reaction