Chitosan-coated Fe3O4 nanoparticles (Fe3O4@CS) were prepared simply through in situ co-precipitation of Fe2+ and Fe3+ ions via NH4OH in an aqueous solution of chitosan and their catalytic activity was investigated in the synthesis of 2,4,5-trisubstituted imidazoles by a one-pot condensation of benzil derivatives, aryl aldehydes and ammonium acetate in EtOH.
壳聚糖包被的Fe3O4纳米颗粒(Fe3O4@CS)通过在壳聚糖水溶液中通过NH4OH的原位共沉淀Fe2+和Fe3+离子简单制备而成,其催化活性在苯二酮衍生物、芳基醛和醋酸铵在乙醇中的一锅缩合合成2,4,5-三取代咪唑中进行了研究。