Title of article :
A convenient ultrasound-promoted regioselective synthesis of fused polycyclic 4-aryl-3-methyl-4,7-dihydro-1H-pyrazolo[3,4-b]pyridines
Author/Authors :
M. Mirzaeinejad and M. Nikpassand، نويسنده , , Mohammad and Mamaghani، نويسنده , , Manouchehr and Shirini، نويسنده , , Farhad and Tabatabaeian، نويسنده , , Khalil، نويسنده ,
Abstract :
Fused polycyclic 4-aryl-3-methyl-4,7-dihydro-1H-pyrazolo[3,4-b]pyridines were obtained in a three-component regioselective reaction of 5-amino-3-methyl-1H-pyrazole, 2H-indene-1,3-dione and arylaldehydes in ethanol under ultrasound irradiation. This rapid method produced the products in short reaction times (4–5 min) and excellent yields (88–97%).
Keywords :
multicomponent , regioselective , Ultrasound , Pyrazolopyridines
Journal title :
Astroparticle Physics
