Nano magnetite supported metal ions as robust, efficient and recyclable catalysts for green synthesis of propargylamines and 1,4-disubstituted 1,2,3-triazoles in water
作者:Mahmood Tajbakhsh、Maryam Farhang、Seyed Meysam Baghbanian、Rahman Hosseinzadeh、Mahghol Tajbakhsh
DOI:10.1039/c4nj01866d
日期:——
Nano magnetite functionalized 2,2′-biimidazole complex of metal ions Cu(I), Cu(II), Ni(II) and Co(II) were successfully synthesized and characterized by different techniques such as elemental analysis, FT-IR spectroscopy, X-ray diffraction (XRD), thermo gravimetric analysis (TGA), transmission electron microscopy (TEM), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM with
纳米磁铁矿功能化的金属离子Cu(I),Cu(II),Ni(II)和Co(II)的2,2'-联咪唑配合物已成功合成,并通过元素分析,FT-IR光谱, X射线衍射(XRD),热重分析(TGA),透射电子显微镜(TEM),具有能量色散X射线光谱仪(SEM和EDS)的扫描电子显微镜,原子吸收光谱仪(AAS),电感耦合等离子体光学发射光谱仪(ICP-OES)和振动样品磁力计(VSM)仪器。合成的磁性纳米粒子被用作非均相催化剂,用于通过醛,炔烃和胺的三组分偶联反应以及通过伯卤化物或甲苯磺酸盐,叠氮化钠和末端乙炔在水性介质中的点击反应一锅法合成1,4-二取代的1,2,3-三唑。所制备的纳米催化剂可以容易地回收并重复使用多次,而活性和选择性没有显着降低。催化剂的高催化活性,热稳定性和可重复使用性,简单的回收和生态友好的性质使得本发明的方法在绿色化学中特别有吸引力。