F. Shirini, Mohaddeseh Safarpoor Nikoo Langarudi, O. Goli-Jolodar
Dec 1, 2015
Citations
0
Influential Citations
21
Citations
Journal
Dyes and Pigments
Abstract
Abstract 1,4-Disulfo-1,4-diazabicyclo[2.2.2]octane-1,4-diium dihydrogen sulfate {DABCO(HSO3)2(HSO4)2} as a new ionic liquid, is prepared and characterized by using different methods including FT-IR, NMR, Mass and SEM analysis as well as determination of the Hammett acidity function. This reagent can be used as an efficient catalyst for the promotion of the synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione derivatives as important biologically active compounds with pharmaceutical properties. All reactions are performed in the absence of solvent using small amounts of the catalyst. Easy preparation of the catalyst, simple and easy work-up, mild reaction conditions, green process, excellent yields and short reaction times are the most important advantages this of method.