Polystyrene stabilized iridium nanoparticles catalyzed chemo- and regio-selective semi-hydrogenation of nitroarenes to N-arylhydroxylamines / D. Bhattacherjee, G. V. Zyryanov, Shaifali [et al.] // Molecular catalysis. - 2021. - Vol. 514. - P111836 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): SUPPORTED IRIDIUM NANOPARTICLES -- N-ARYLHYDROXYLAMINE -- SEMI-HYDROGENATION Аннотация: Polystyrene stabilized Iridium (Ir@PS) nanoparticles (NPs) as a heterogeneous catalyst have been developed and characterized by IR, UV–Vis, SEM, TEM, EDX and XRD studies. The prepared Ir@PS catalyst showed excellent reactivity for chemo- and regio-selective controlled-hydrogenation of functionalized nitroarenes to corresponding N-arylhydroxylamine using hydrazine hydrate as reducing source and environmentally benign polyethylene glycol (PEG-400) as green solvent. The present methodology was applied for vast substrate scope and found to be compatible with wide range of reducible functional groups. The reaction performed at 85 °C or ambient temperature and completed within 5–80 minutes. The catalyst can easily be filtered out from reaction mixture and reusable. |