(Triazinediyl)bis sulfamic acid-functionalized silica-coated magnetite nanoparticles have been prepared and applicated as an efficient catalyst for synthesis of mono-, bis-, tris- and spiro-perimidines. The desired products have been synthesized in high purity and good yields. The workup procedure of reaction is simple. The catalyst was easily separated from the reaction mixture with the assistance
已经制备了(三嗪二基)双
氨基磺酸官能化的
二氧化硅涂覆的磁
铁矿纳米颗粒,并将其用作合成单,双,三和螺过的
嘧啶的有效催化剂。所需的产物已经以高纯度和高收率合成。反应的后处理步骤很简单。在外部磁场的帮助下,容易将催化剂从反应混合物中分离出来,并重复使用几次,而不会降低催化活性。通过透射电子显微镜,扫描电子显微镜,粉末X射线衍射,能量分散光谱仪,傅立叶变换红外光谱仪和振动样品磁强计来表征核/壳纳米颗粒。