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Zinc(II)‐poly(urea‐formaldehyde) supported on magnetic nanoparticles: A hybrid nanocatalyst for green synthesis of spiropyrans, spiroxanthenes, and spiropyrimidines
Applied Organometallic Chemistry ( IF 3.7 ) Pub Date : 2020-07-06 , DOI: 10.1002/aoc.5859 Mohammad Ali Bodaghifard 1, 2 , Zahra Mousavi 1
Applied Organometallic Chemistry ( IF 3.7 ) Pub Date : 2020-07-06 , DOI: 10.1002/aoc.5859 Mohammad Ali Bodaghifard 1, 2 , Zahra Mousavi 1
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Immobilization of metal ions onto inorganic supports has very interesting biological, industrial, and catalysis applications. In this study, CoFe2O4@SiO2@PUF@Zn(OAc)2 nanostructure was successfully fabricated by immobilization of zinc acetate on the surface of poly(urea‐formaldehyde) supported on magnetic CoFe2O4@SiO2 nanoparticles through a layer‐by‐layer assembly. The structure of hybrid nanoparticles was characterized by Fourier transform infrared spectroscopy, X‐ray diffraction, thermogravimetric analysis, energy‐dispersive X‐ray spectroscopy, inductively coupled plasma atomic emission spectroscopy, vibrating sample magnetometry, Brunauer–Emmett–Teller surface area analysis, scanning electron microscopy, and transmission electron microscopy. Zinc‐poly(urea‐formaldehyde) supported on magnetic nanoparticles (MNPs@SiO2@PUF@Zn) was successfully used for the synthesis of spirooxindolopyran and spirooxindoloxanthene derivatives in aqueous medium as an environmentally benign condition. High yields, short reaction times, green solvent, reusability without significant reduction in catalytic activity, and simple separation of the catalyst using an external magnet along with environmental compatibility are some benefits of this procedure.
中文翻译：
磁性纳米颗粒上负载的锌（II）-聚（脲-甲醛）：一种杂化纳米催化剂，用于绿色合成螺吡喃，螺氧杂蒽和螺嘧啶
将金属离子固定在无机载体上具有非常有趣的生物学，工业和催化应用。在这项研究中，通过将醋酸锌固定在磁性CoFe 2 O 4 @SiO 2上负载的聚脲甲醛表面上，成功制造了CoFe 2 O 4 @SiO 2 @ PUF @ Zn（OAc）2纳米结构。纳米颗粒通过一层一层的组装。杂化纳米颗粒的结构通过傅里叶变换红外光谱，X射线衍射，热重分析，能量色散X射线光谱，电感耦合等离子体原子发射光谱，振动样品磁力分析，Brunauer-Emmett-Teller表面积分析，扫描进行表征电子显微镜和透射电子显微镜。磁性纳米颗粒（MNPs @ SiO 2）上负载的锌-聚（脲醛）（PUF @ Zn）作为一种环境友好的条件，已成功地用于在水性介质中合成螺并氧杂并吡喃和螺并恶多恶并蒽衍生物。该方法的优点是高收率，较短的反应时间，绿色溶剂，可重用性而不会显着降低催化活性，使用外磁体简单地分离催化剂以及环境相容性。
更新日期：2020-09-14
中文翻译：
磁性纳米颗粒上负载的锌（II）-聚（脲-甲醛）：一种杂化纳米催化剂，用于绿色合成螺吡喃，螺氧杂蒽和螺嘧啶
将金属离子固定在无机载体上具有非常有趣的生物学，工业和催化应用。在这项研究中，通过将醋酸锌固定在磁性CoFe 2 O 4 @SiO 2上负载的聚脲甲醛表面上，成功制造了CoFe 2 O 4 @SiO 2 @ PUF @ Zn（OAc）2纳米结构。纳米颗粒通过一层一层的组装。杂化纳米颗粒的结构通过傅里叶变换红外光谱，X射线衍射，热重分析，能量色散X射线光谱，电感耦合等离子体原子发射光谱，振动样品磁力分析，Brunauer-Emmett-Teller表面积分析，扫描进行表征电子显微镜和透射电子显微镜。磁性纳米颗粒（MNPs @ SiO 2）上负载的锌-聚（脲醛）（PUF @ Zn）作为一种环境友好的条件，已成功地用于在水性介质中合成螺并氧杂并吡喃和螺并恶多恶并蒽衍生物。该方法的优点是高收率，较短的反应时间，绿色溶剂，可重用性而不会显着降低催化活性，使用外磁体简单地分离催化剂以及环境相容性。
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