通过将Preyssler杂多酸(HPA)固定在涂有羟基磷灰石(HA)的Ni 0.5 Zn 0.5 Fe 2 O 4磁铁矿纳米颗粒(MNPs)上,合成了一种高效的磁可分离催化剂。通过扫描电子显微镜(SEM),透射电子显微镜(TEM),X射线衍射(XRD),FT-IR,能量色散谱(EDS)和TGA对催化剂进行表征。在室温下,无溶剂条件下,通过[9,10]-菲蒽醌与芳基醛和乙酸铵的一锅三组分缩合,在咪唑衍生物的合成中测试了该催化剂的活性。
New approach to the multicomponent one-pot synthesis of 2-aryl-1H-phenanthro[9,10-d]imidazoles
作者:Saman Damavandi
DOI:10.1515/hc.2011.018
日期:2011.1.1
Abstract A novel, acid catalyzed multicomponent one-pot synthesis of 2-aryl-1H-phenanthro[9,10-d]imidazole compounds derived from aromatic aldehydes, 9,10-phenanthrenequinone and ammonium acetate under ultrasonic irradiation is reported. A wide range of aromatic aldehydes readily undergo condensation with 9,10-phenanthrenequinone and ammonium acetate under optimized conditions to afford the desired
A novel acidic ionicliquid based on imidazoliumcation is designed, synthesized, and successfully used as a catalyst for the one-pot synthesis of 2-aryl-1H-phenanthro[9,10-d]imidazole derivatives. The remarkable feature of this new catalyst is its ethyleneoxy bridge which participates in dissolving organic compounds in ionicliquids. The application of this acidic ionicliquid is studied in a new one-pot
设计,合成了一种新型的基于咪唑鎓阳离子的酸性离子液体,并成功地用作一锅合成2-芳基-1 H-菲[9,10 - d ]咪唑衍生物的催化剂。这种新催化剂的显着特点是它的亚乙基氧基桥参与了将有机化合物溶解在离子液体中。在一种新的一锅法中研究这种酸性离子液体在无溶剂条件下合成咪唑衍生物的应用。该方法的优点是催化剂的可重复使用性,高转化率,较短的反应时间和简单的实验程序。
Efficientone-pot synthesis of imidazoles catalyzed by silica-supported La0.5Pb0.5MnO3 nano particles as anovel and reusable perovskite oxide
作者:N. Zahedi、A. Javid、M. K. Mohammadi、H. Tavakkoli
DOI:10.4314/bcse.v32i1.15
日期:——
Silica-supported La0.5Pb0.5MnO3 nanoparticles was prepared and used as a new perovskite-type catalyst for rapid and efficient synthesis of substituted imidazoles by an one-pot three-component condensation of [9,10]-phenanthraquinone, aryl aldehydes and ammonium acetate in excellent yield under reflux, and also solvent-free conditions.
Preparation, Characterization, and Application of Preyssler Heteropoly Acid Immobilized on Magnetic Nanoparticles as a Green and Recoverable Catalyst for the Synthesis of Imidazoles
作者:A. Javid、A. Khojastehnezhad、A. J. L. Pombeiro
DOI:10.1134/s1070363217120453
日期:2017.12
magnetically separable catalyst was synthesized by immobilization of Preyssler heteropolyacid (HPA) on Ni0.5Zn0.5Fe2O4 magnetite nanoparticles (MNPs) coated with hydroxyapatite (HA). The catalyst was characterized by scaning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), FT-IR, energy dispersive spectroscopy (EDS), and TGA. Activity of this catalyst was tested in
通过将Preyssler杂多酸(HPA)固定在涂有羟基磷灰石(HA)的Ni 0.5 Zn 0.5 Fe 2 O 4磁铁矿纳米颗粒(MNPs)上,合成了一种高效的磁可分离催化剂。通过扫描电子显微镜(SEM),透射电子显微镜(TEM),X射线衍射(XRD),FT-IR,能量色散谱(EDS)和TGA对催化剂进行表征。在室温下,无溶剂条件下,通过[9,10]-菲蒽醌与芳基醛和乙酸铵的一锅三组分缩合,在咪唑衍生物的合成中测试了该催化剂的活性。
Reactions of Phenanthraquinone and Retenequinone with Aldehydes and Ammonium Acetate in Acetic Acid Solution<sup>1</sup>