Efficient synthesis of 2H-indazolo[2,1-b]phthalazine-trione derivatives using succinimidinium N-sulfonic acid hydrogen sulfate as a new ionic liquid catalyst

Article abstract of DOI:10.1016/j.molliq.2015.09.014

Succinimidinium N-sulfonic acid hydrogen sulfate is prepared as a new ionic liquid and characterized with a variety of techniques including FT-IR, ¹H and ¹³C NMR, SEM, mass spectra method as well as Hammett acidity function. After id