A highly efficient and green protocol for the synthesis of medicinally important fluorinated spiropyrimidine derivatives involving creation of six new covalent bonds has been developed using a magnetically separable and reusable heterogeneous copper ferrite nanocatalyst under mild reaction conditions. The synthesis of inverse spinel copper ferrite magnetic nanoparticles with average size of 38 nm has been achieved using combined sonochemical and co-precipitation techniques in aqueous medium from readily available inexpensive starting materials without any surfactant or capping agent. The particle size was determined by transmission electron microscopy (TEM), scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis. The magnetic nature of catalyst facilitates its easy removal from the reaction medium and can be reused five times without any significant loss of its catalytic activity. Negligible leaching of Cu and Fe in consecutive cycles makes the catalyst economical and environmentally benign. The structure of final products was established by single crystal X-ray analysis and spectroscopic techniques.
开发了一种高效绿色的合成重要药用
氟化螺
嘧啶衍
生物的协议,该协议涉及在温和反应条件下使用磁性可分离和可重复使用的异质
铜铁氧体纳米催化剂创造六个新的共价键。通过在
水性介质中结合声
化学和共沉淀技术,从易于获取的廉价起始材料中,无需任何表面活性剂或
配体,实现了反尖晶石
铜铁氧体磁性纳米粒子的合成,平均粒径为38 nm。粒径通过透射电子显微镜(
TEM)、扫描电子显微镜(
SEM)和X射线衍射(XRD)分析确定。催化剂的磁性质使其易于从反应介质中去除,并且可以重复使用五次而不显著损失其催化活性。在连续循环中Cu和Fe的渗出可以忽略不计,使得催化剂经济且环境友好。最终产品的结构通过单晶X射线分析和光谱技术确定。