Effective and Sustainable Access to Quinolines and Acridines: A Heterogeneous Imidazolium Salt Mediates C-C and C-N Bond Formation
作者:Patricia Gisbert、María Albert-Soriano、Isidro M. Pastor
DOI:10.1002/ejoc.201900880
日期:2019.8.15
A robust catalytic system mediates metal‐free and solvent‐free C–C and C–N bond formation by favoring the interaction between the reactants due to the presence of carboxylicacid moieties and chloride counterion, providing a sustainable protocol with appropriate environmental impact.
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
Friedländer synthesis of polysubstituted quinolines and naphthyridines promoted by propylphosphonic anhydride (T3P®) under mild conditions
作者:Mouhamad Jida、Benoit Deprez
DOI:10.1039/c2nj21043f
日期:——
A new convenient, efficient and environmentally eco-friendly protocol for Friedländer synthesis of polysubstituted quinolines and naphthyridines is described. A wide variety of new products were readily prepared in the presence of propylphosphonic anhydride (T3P®) in short reaction times and excellent yields under mild conditions.
A mild and efficient route for the synthesis of quinolines and polycyclic quinolines utilizing Gadolinium triflate (Gd(OTf)3) as a novel catalyst via Friedländer annulation in ionic liquid 1‐n‐butyl‐3‐methyl‐imidazolium hexafluorophosphate [Bmim][PF6] under mild conditions was described.