Decoration of β-CD-ZrO on Fe3O4 magnetic nanoparticles as a magnetically, recoverable and reusable catalyst for the synthesis of 2,3-dihydro-1H-perimidines
作者:Mohammad Ali Amrollahi、Fatemeh Vahidnia
DOI:10.1007/s11164-018-3574-y
日期:2018.12
This study focuses on covalent grafting of ZrO to β-CD to prepare an organic–inorganic hybrid material. The synthesised product was successfully linked on the surface of Fe3O4 magnetic nanoparticles and characterized by TGA, XRF, XRD, FT-IR and TEM techniques. Also, magnetism of the organomethalic complex was investigated by the VSM technique. The synthesized magnetic complex was found to be a highly effective heterogeneous catalyst for improving the cyclocondensation reaction of 1,8-diaminonaphthalene with aromatic aldehydes to obtain 2,3-dihydro-1H-perimidine derivatives. Simple isolation of products, easy recovering of the catalyst by external magnet, reusability of the catalyst, high yields of the products, mild reaction conditions, and avoiding toxic solvents are the main benefits of this method.
本研究集中于将ZrO共价接枝到β-CD上,以制备有机-无机混合材料。合成的产物成功地连接在Fe3O4磁性纳米颗粒的表面,并通过热重分析(TGA)、X射线荧光(XRF)、X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)和透射电子显微镜(TEM)等技术进行了表征。此外,使用振动样品磁强计(VSM)技术研究了该有机金属复合材料的磁性。合成的磁性复合材料被发现是提高1,8-二氨基萘与芳香醛的环缩合反应以获得2,3-二氢-1H-吡咯啉衍生物的高效异相催化剂。该方法的主要优点包括产品简单分离、通过外部磁铁轻松回收催化剂、催化剂的可重复使用、高产率、温和的反应条件以及避免使用有毒溶剂。