TMSCl‐mediated one‐pot, three‐component synthesis of 2H‐indazolo[2,1‐b]phthalazine‐triones

A simple, efficient, and cost-effective method for the synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione derivatives by a one-pot, three-component condensation reaction of phthalazide, dimedone, or 1,3-cyclohexanedione and aromatic aldehydes under CH3CN/DMF (8:2) media at 80°C for 30–60 min in the presence of trimethylsilyl chloride (TMSCl) is described. J. Heterocyclic Chem., (2009).

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