Alireza Hasaninejed, Maryam Rasekhi Kazerooni, A. Zare
Nov 30, 2012
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Influential Citations
77
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Quality indicators
Journal
Catalysis Today
Abstract
Abstract A green practical method for the efficient synthesis of 2 H -indazolo[2,1- b ]phthalazine-1,6,11(13 H )-triones using sulfuric acid-modified polyethylene glycol-6000 (PEG-OSO 3 H) as an eco-friendly polymeric catalyst from the four-component condensation reaction of phthalic anhydride, hydrazinium hydroxide, 1,3-cyclohexanedione or 5,5-dimethyl 1,3-cyclohexanedione (dimedone) and aromatic aldehydes under solvent-free conditions at 80 °C is described. This approach allowed the environmental impact factor (E-factor) to be minimized.