“…Synthesis of 1 H ‐pyrazolo[1,2‐b]phthalazine‐5,10‐diones via multicomponent reaction (MCRs) is a powerful tool due to its advantages of the intrinsic atom economy, simple procedure, structural diversity, energy saving, and reduced waste . To the best of our knowledge, there are only several works of literature about the multicomponent reactions of phthalhydrazide, malononitrile with aldehydes in the presence of diverse catalysts such as PTSA/[Bmim]Br, Et 3 N/EtOH, [Bmim]OH/MW, 1,8‐diazabicyclo[5,4,0]‐undec‐7‐en‐8‐ium acetate, DBU[CH 3 CO 2 ], Al‐KIT‐6, NiCl 2 .6H 2 O, InCl 3 , CuI NPs, TBBDA or PBBS, CAN PEG 400, Ni 0.5 Zn 0.5 Fe 2 O 4 nano‐crystallites, SBA@BiPy 2+ 2Cl − , RH@[SiPrDABCO@BuSO 3 H]HSO 4 , ZrO 2 NPs, PbO NPs, ZnO NPs, DCDBTSD, DMAP, β‐Cyclodextrin, NaHCO 3 , p ‐toluenesulfonic acid, and Fe 3 ‐ x Ti x O 4 @ SiO 2 @urea MNPs . Despite the merits of the previously reported synthetic methods, the generality of some of the known procedures is somewhat defected by using catalysts and solvents which are not acceptable in the context of green chemistry.…”