Title of article :
Nanomagnetically modified sulfuric acid (γ-Fe2O3@SiO2-OSO3H): an efficient, fast, and reusable green catalyst for the Ugi-like Groebke-Blackburn-Bienaymé three-component reaction under solvent-free conditions
Author/Authors :
Rostamnia، نويسنده , , Sadegh and Lamei، نويسنده , , Kamran and Mohammadquli، نويسنده , , Mohsen and Sheykhan، نويسنده , , Mehdi and Heydari، نويسنده , , Akbar، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2012
Abstract :
Superparamagnetic nanoparticles of modified sulfuric acid (γ-Fe2O3@SiO2-OSO3H) represent a straightforward and green catalyst for the rapid synthesis of aminoimidazopyridine skeletons via the Ugi-like Groebke-Blackburn-Bienaymé three-component reaction. The γ-Fe2O3@SiO2-OSO3H catalyst could be recovered and reused in five reaction cycles, giving a total TON = 453. The products were prepared under solvent-free conditions without any additives.
Keywords :
Encapsulated iron oxide nanoparticles , Magnetically recoverable nanocatalyst , Modified sulfuric acid , green chemistry , Ugi-like multicomponent reaction
Journal title :
Tetrahedron Letters
Journal title :
Tetrahedron Letters
