%0 Journal Article %T NaHSO4–SiO2 Promoted Solvent-Free Synthesis of Triazolo [1,2-a]indazole-triones %J International Journal of New Chemistry %I Iranian Chemical Science and Technologies Association %Z 2645-7237 %A Anaraki-Ardakani, Hossein %D 2014 %\ 09/01/2014 %V 1 %N 3 %P 108-114 %! NaHSO4–SiO2 Promoted Solvent-Free Synthesis of Triazolo [1,2-a]indazole-triones %K Solvent-free %K dimedone %K Urazole %K Triazoloindazole %R 10.22034/ijnc.2014.10892 %X A new one-pot, efficient three-component condensation of dimedone, urazole and aromatic aldehydes in the presence of silica supported sodium hydrogen sulfate as an effective heterogeneous catalyst for the synthesis of novel Triazolo[1,2-a]indazole-1,3,8-trione derivatives under solvent-free conditions is described. %U https://www.ijnc.ir/article_10892_435ad1c40954dbf4eefe201263d09ae7.pdf