Fe₃O₄@Propylsilane@Histidine[HSO₄^‐] magnetic nanocatalysts: Synthesis, characterization and catalytic application for highly efficient synthesis of xanthene derivatives

Abstract

The surface of Fe 3 O 4 magnetic nanoparticles (MNPs) was modified by chloropropylsilane and histidine. The imidazole group of prepared Fe 3 O 4 @Propylsilane@Histidine MNPs converted to imidazolium hydrogen sulfate group and Fe 3 O 4 @Propylsilane@Histidine [HSO 4 -] as a novel environmentally friendly ionic liquid/ magnetite nanoparticle was prepared, successfully. FT-IR, XRD, SEM and TEM instruments was used to identifiy the histidine ionic liquids/magnetite nanoparticles (HILMNPs). The catalytic activity of synthesized HILMNPs was appraised for the synthesis of 9-aryl-1,8dioxooctahydroxanthene and spiro[indoline-3,9′-xanthene]trione derivatives.The activity of HILMNPs was much better than the other reported heterogeneous and homogeneous catalysts. Furthermore, the prepared catalyst could be separated from the reaction mixture and reused four times without any significant loss in its activity.

Engineered mesoporous ionic‐modified γ‐Fe2O3@hydroxyapatite decorated with palladium nanoparticles and its catalytic properties in water

“…Magnetic nanoparticles, as support and template for the preparation of nanometric heterogeneous host for Pd NPs, give a quasi‐homogeneous reaction condition. Iron oxides have been used as supports in catalysis design because of their superparamagnetic behaviour, low toxicity, cost‐efficiency and easy preparation …”

Synthesis, characterization, and catalytic application of Fe3O4‐Si‐[CH2]3‐N=CH‐aryl for the efficient synthesis of novel poly‐substituted pyridines

“…The reaction using the usual catalyst (Table , entry 1–3) and some our reported heterogeneous nanocatalysts (Table , entry 4, 5) gave only low yields of the products even with prolonged reaction times and high temperatures. Also, the catalytic activities of the prepared Fe 3 O 4 ‐Si‐(CH 2 ) 3 ‐NH 2 and APSMA@Fe 3 O 4 MNPs were slightly better than those of the other known catalysts, probably due to high surface area of the MNPs and more basic strength (Table , entry 6–9); but with APSMI@Fe 3 O 4 , the product 5a was obtained much better than with APSMA@Fe 3 O 4 MNPs (Table , entry 11–14).…”

Synthesis of bioactive magnetic nanoparticles spiro[indoline‐3,4′‐[1,3]dithiine]@Ni (NO3)2 supported on Fe3O4@SiO2@CPS as reusable nanocatalyst for the synthesis of functionalized 3,4‐dihydro‐2H‐pyran

“…There are a large number of reports on the applications of magnetic nanoparticles (MNPs) in industry and chemistry . Fe 3 O 4 coated as a magnet core and supported by organic compounds has found a special place in the synthesis of heterogeneous magnetic nanocatalysts as such many relevant studies have been carried out in this regard . In addition, Fe 3 O 4 supported and coated can create complexes with different metals and synthesized magnetic organometallic nanocatalysts .…”