MgO-CeO<sub>2</sub>nanocomposite: efficient catalyst for the preparation of 2-aminothiophenes and thieno[2,3-<i>d</i>]pyrimidin-4(3<i>H</i>)-one derivatives
作者:Saina Shafighi、Mohammad Reza Mohammad Shafiee、Majid Ghashang
DOI:10.1080/17415993.2018.1436710
日期:2018.7.4
nanocomposite determined by the dynamic light scattering technique is 66 nm. The catalytic activity of MgO-CeO2 nanocomposite was examined on the synthesis of 2-aminothiophenes and thieno[2,3-d]pyrimidin-4(3H)-one derivatives. In all cases, products were obtained in good to excellent yields. GRAPHICAL ABSTRACT
摘要 采用共沉淀法制备了 MgO-CeO2 纳米复合材料,并通过 X 射线衍射 (XRD)、FE-SEM 和粒度分布分析对其进行了表征。XRD图显示氧化铈的立方相作为主要相。FE-SEM 图像显示了样品中氧化镁和氧化铈的均匀性分布。通过动态光散射技术测定的纳米复合材料的平均粒径为 66 nm。在合成 2-氨基噻吩和噻吩并[2,3-d]嘧啶-4(3H)-one 衍生物时,研究了 MgO-CeO2 纳米复合材料的催化活性。在所有情况下,都以良好到极好的收率获得了产品。图形概要