Title of article :
Facile and efficient synthesis of pyrimido[1,2-a]benzimidazole and tetrahydrobenzimidazo[2,1-b]quinazolin-1(2H)-one derivatives using Brönsted acidic ionic liquid supported on rice husk ash (RHA-[pmim]HSO4)
Author/Authors :
Shirini, Farhad Department of Chemistry - College of Science - University of Guilan, Rasht, Iran , Seddighi, Mohadeseh Department of Chemistry - College of Science - University of Guilan, Rasht, Iran , Goli-Jolodar, Omid Department of Chemistry - College of Science - University of Guilan, Rasht, Iran
Abstract :
In this work, a green and efficient procedure has been reported for the synthesis of pyrimido[1,2-a]benzimidazole and tetrahydrobenzimidazo[2,1-b]quinazolin-1(2H)-one derivatives using Brönsted acidic ionic liquid supported on rice husk ash (RHA-[pmim]HSO4) as the catalyst. These reactions were performed at 100 °C under solvent-free conditions with high yields in very short reaction times.
Keywords :
Benzimidazo-quinazolinones , Pyrimido[1,2-a]benzimidazoles , Immobilized acidic ionic liquid , RHA-[pmim]HSO4 , Rice husk ash
Journal title :
Astroparticle Physics
