Synthesis of 7-Aroyl-8-methyl-10-phenyl-10H-benzo]h[pyrazolo ]3,4-b[quinoline-5,6-diones by one-pot,three component reaction

One-Pot ,three-component reaction of arylglyoxals , lawsone and 5-amino-3-methyl-1- phenyl pyrazole in water/EtOH (3:1) at 50°cUsing nanosilver and amino acidsas catalysts gave the corresponding7-aroyl-8-methyl-10-phenyl-10H-benzo[h]pyrozolo[3,4-b]quinolone- 5,6-dionesin high yields. The synthesized pyrazolo [3,4-b] quinoline-5,6-diones derivative may have a biological and pharmaceutical activities [1-3] as a class of o-quinone derivatives.