Triflic Acid-Functionalized Silica-Coated Magnetic Nanoparticles as a Magnetically Separable Catalyst for Synthesis of gem-Dihydroperoxides

• Published in: Advanced synthesis & catalysis Vol. 354; no. 2-3; pp. 441 - 447
• Main Authors: Liu, Yong-Hui, Deng, Jia, Gao, Jian-Wu, Zhang, Zhan-Hui
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.02.2012; WILEY‐VCH Verlag; Wiley; Wiley-VCH
• Subjects: aldehydes; Aliphatic compounds; Catalysis; Catalysts: preparations and properties; Chemistry; Chemistry, Applied; Chemistry, Organic; Exact sciences and technology; functionalized silica-coated magnetic nanoparticles; gem-dihydroperoxides; General and physical chemistry; ketones; magnetic catalysts; Organic chemistry; Physical Sciences; Preparations and properties; Science & Technology; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; magnetic catalysts; FE3O4 NANOPARTICLES; AQUEOUS HYDROGEN-PEROXIDE; GEMINAL BISHYDROPEROXIDES; EFFICIENT SYNTHESIS; CARBONYL-COMPOUNDS; gem-dihydroperoxides; HETEROGENEOUS CATALYSIS; ketones; LIGHT IRRADIATION; aldehydes; functionalized silica-coated magnetic nanoparticles; ANTIMALARIAL ACTIVITY; RECYCLABLE CATALYST; MOLECULAR-OXYGEN; Hydrogen peroxide; Nanoparticle; Reuse; Trifluoromethanesulfonic acid; Aldehyde; Ketone; Silica; Magnetic particles; Functionalization; Magnetic separation; Aqueous solution; Iron III Oxides; Chemical synthesis; Catalyst activity; Catalyst; Maghemite; Organic peroxide
• ISSN: 1615-4150; 1615-4169
• DOI: 10.1002/adsc.201100561

Triflic acid‐functionalized silica‐coated magnetic nanoparticles [γ‐Fe2O3@SiO2‐TfOH] were readily prepared and identified as an effictive catalyst for the transformation of aldehydes or ketones into their corresponding gem‐dihydroperoxides with 30% aqueous hydrogen peroxide. The catalyst was easily separated by magnetic decantation and the recovered catalyst was reused for seven cycles without significant loss of catalytic activity.