Parshuram M. Pisal, V. T. Kamble, Dr. Ravi Varala, Pradip B. Gujarathi
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Efficient one-pot three-component synthesis of 2H-indazole [2,1-b]phthalazine-1,6,11(13H)-triones at room temperature
Tetrabutylammonium bromide (TBAB) and cesium carbonate (Cs2O3) catalyzed, one-pot three-component synthesis of 2H-indazole[2,1b]phthalazine-1,6,11(13H)-triones was developed at room temperature in ethanol. Both electron donating and withdrawing groups are compatible under the optimized reaction parameters.