Title of article :
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
Author/Authors :
Khazaei, Ardeshir bu ali sina university of hamadan, همدان, ايران , Zolfigol, Mohammad Ali bu ali sina university of hamadan, همدان, ايران , Faal-Rastegar, Toktam bu ali sina university of hamadan, همدان, ايران , Chehardoli, Gholamabbas hamadan university of medical sciences, ايران , Mallakpour, Shadpour isfahan university of technology, اصفهان, ايران
Abstract :
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.
Keywords :
Multi , component reaction , Melamine trisulfonic acid (MTSA , Urazole , Dimedone , 1 , 3 , cyclohexanedione , Aldehyde , Phthalhydrazide ,
Journal title :
Iranian Journal of Catalysis
Journal title :
Iranian Journal of Catalysis
