%0 Journal Article
%T Heteropoly Acid in Ionic Liquid - An Efficient Catalyst for the Preparation of 2H-Indazolo[2,1-b]Phthalazine-Triones
%A Razieh Fazaeli
%A Hamid AliyanNahid FazaeliHbH
%J The Open Catalysis Journal
%D 2008
%I Bentham Open
%R 10.2174/1876214X01003010014]
%X 2H-Indazolo[2,1-b]phthalazine-1,6,11(13H)-trione derivatives were synthesized in a simple and efficient method from the three-component condensation reaction of phthalhydrazide, dimedone, and aromatic aldehydes by H3PW12O40 in ionic liquid in good to excellent yields and short reaction times. The ionic liquid 1-butyl-3- methylimidazolium tetrafluoroborate ([bmim]BF4) offered the best results in terms of yield of the products. It was observed that a homogeneous reaction medium proved beneficial for the yield of the reaction.
%U http://www.benthamscience.com/open/tocatj/articles/V003/14TOCATJ.htm