l-Leucine supported on superparamagnetic silica-encapsulated γ-Fe₂O₃nanoparticles: design, characterization, and application as a green catalyst for highly efficient synthesis of thiazoloquinolines

Abstract

A new superparamagnetic silica-encapsulated γ-Fe2O3 supported l-leucine was successfully prepared and characterized by XRD, SEM, EDS, VSM, TGA, and FT-IR analysis. It catalyzed the synthesis of thiazoloquinolines derivatives.

Catalytic Versatility of Novel Sulfonamide Functionalized Magnetic Composites

“…γ-Fe 2 O 3 /SiO 2 composite particles were prepared in analogy with previously reported work from our group. 33 The coprecipitation method was used to prepare γ-Fe 2 O 3 , 34,35 dissolving 0.401 g of FeCl 2 •4H 2 O and 1.092 g of FeCl 3 •6H 2 O in 2 and 4 mL of a 2 M HCl solution, respectively. Both iron precursor solutions were stirred (800 rpm).…”

Synthesis of Thiazoloquinolines with Diverse Molecular Skeletons: A Review

“…[62] The method was successfully employed in the synthesis of sixteen various derivatives of the specific ring fusion and the yields were good. Finally, for thiazolo [3,2-a]quinolone, the one-pot four component solventfree synthesis using L-leucine as the catalyst was the most promising method, [67] as it was applied to a wide variety of substrates and was high yielding.…”

A uniformly anchored zirconocene complex on magnetic reduced graphene oxide (rGO@Fe3O4/ZrCp2Clx(x= 0, 1, 2)) as a novel and reusable nanocatalyst for synthesis ofN-arylacetamides and reductive-acetylation of nitroarenes

“…These improvements have been made in order to increase the accessible sites/zones on the surface of catalyst, greater catalyst reactivity and selectivity, thermal stability and nally easy separation. Fe 3 O 4 , 12,13 NiFe 2 O 4 , [14][15][16] CoFe 2 O 4 , 17 CuFe 2 O 4 , [18][19][20] MnFe 2 O 4 , 21 Ni-Cu-ZnFe 2 O 4 , 22 BiFeO 3 , 23 FeAl 2 O 4 24 and ZnCrFeO 4 25 as a core, and metals, [26][27][28] silica, [29][30][31][32] polymers, [33][34][35] carbon nanotubes and sheets, [36][37][38][39][40] cellulose, 41 small organic molecules, 42,43 ionic liquids, 44,45 and organosulfonic acids 46,47 have been used as a coating.…”