One-pot multicomponent synthesis of highly functionalized bio-active pyrano[2,3-c]pyrazole and benzylpyrazolyl coumarin derivatives using ZrO 2 nanoparticles as a reusable catalyst

Herein, a facile one-pot multicomponent protocol for the synthesis of biologically important pyrano[2,3- c ]pyrazole and benzylpyrazolyl coumarin derivatives has been demonstrated using ZrO 2 nanoparticles as reusable catalyst at room temperature.