Novel L-tryptophan-functionalized zirconium dioxide nanoparticles catalysed one-pot and solvent-free synthesis of 2 H-indazolo [2, 1-b] phthalazine-triones

Preparation and characterization of ZrO₂@L-tryptophan as the catalyst

To synthesize ZrO₂@L-tryptophan, zirconium oxide (ZrO₂) is first prepared by dissolving zirconium salt and precipitating it with a base, calcinating the precipitate at…