Butane-1-sulfonic acid immobilized on magnetic Fe3O4@SiO2nanoparticles: A novel and heterogeneous catalyst for the one-pot synthesis of barbituric acid and pyrano[2,3-d] pyrimidine derivatives in aqueous media
A novel organic–inorganic nanohybrid superparamagnetic nanocatalyst (γ-Fe2O3@CPTMS–guanidine@SO3H) represents an efficient and green catalyst for the one-pot synthesis of quinazolin-4(3H)-one derivatives via a three-component condensation reaction.
A novel superparamagnetic powerful guanidine-functionalized γ-Fe2O3 based sulfonic acid recyclable and efficient heterogeneous catalyst for microwave-assisted rapid synthesis of quinazolin-4(3H)-one derivatives in Green media