@article{Khazaei_Zolfigol_Rastegar_Chehardoli_Mallakpour_2024, title={Melamine trisulfonic acid (MTSA) as an efficient catalyst for the synthesis of triazolo[1,2-a]indazole-triones and some 2H-indazolo[2,1-b]phthalazine-triones}, volume={3}, url={https://oiccpress.com/iranian-journal-of-catalysis/article/melamine-trisulfonic-acid-mtsa-as-an-efficient-catalyst-for-the-synthesis-of-triazolo12-aindazole-triones-and-some-2h-indazolo21-bphthalazine-triones/}, abstractNote={Melamine trisulfonic acid (MTSA) as an efficient heterogeneous catalyst has been used for the one-pot preparation of triazolo[1,2-a]indazole-1,3,8-trione and 2H-indazolo[2,1-b]phthalazine-1,6,11-trione derivatives by the three-component condensation reaction of urazoles or phthalhydrazide, dimedone or 1,3-cyclohexanedione, and aldehydes under solvent-free conditions in good to excellent yields and short reaction times.}, number={4}, journal={Iranian Journal of Catalysis}, publisher={OICC Press}, author={Khazaei, Ardeshir and Zolfigol, Mohammad Ali and Rastegar, Toktam Faal and Chehardoli, Gholamabbas and Mallakpour, Shadpour}, year={2024}, month={Feb.}, keywords={Aldehyde, Multi-component reaction, Dimedone, Urazole, Melamine trisulfonic acid (MTSA), 1. 3-cyclohexanedione} }