%0 Journal Article
%T Polystyrene-supported pyridinium chloroaluminate ionic liquid as a new heterogeneous Lewis acid catalyst for selective synthesis of benzimidazoles
%A Parvanak Boroujeni Kaveh
%A Zhianinasab Ashkan
%A Jafarinasab Mina
%J Journal of the Serbian Chemical Society
%D 2013
%I Serbian Chemical Society
%R 10.2298/jsc120401089p
%X Polystyrene-supported pyridinium chloroaluminate ionic liquid was prepared from the reaction of Merrifield resin with pyridine followed by reaction with aluminium chloride. This catalyst was used as a new chemoselective Lewis acid catalyst for the exclusive synthesis of 2-substituted benzimidazoles from the reaction of aldehydes with o-phenylenediamines. The catalyst is stable (as a bench top catalyst) and can be easily recovered and reused without appreciable change in its efficiency.
%K ionic liquids
%K chloroaluminate salts
%K heterogeneous catalysis
%K polymer-supported ionic liquids
%K benzimidazoles
%U http://www.doiserbia.nb.rs/img/doi/0352-5139/2013/0352-51391200089P.pdf