Sonosynthesis of spiroindolines using functionalized SBA-15
作者:Seyyed Mohammad Ebrahimi、Ali Kareem Abbas、Hossein Shahbazi-Alavi、Javad Safaei-Ghomi、Atefeh Bakhtiari、Raheleh Teymuri
DOI:10.1007/s11164-021-04506-7
日期:2021.10
Functionalized SBA-15 (immobilization of Pd on the modified SBA-15) has been used as an efficient catalyst for the preparation of spiroindolines by multi-component reactions of isatins, cyclic-1,3-diketones, and 6-amino-1,3-dimethyluracil under ultrasonic irradiation in water. The catalyst has been characterized by X-ray diffraction spectroscopy (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), N2 adsorption analysis, temperature-programmed desorption (TPD), and thermogravimetric analysis (TGA). The advantages of this method include the reusability of the catalyst, low catalyst loading, excellent yields in short reaction times and easy separation of products, and use of ultrasonic irradiation as a valuable and powerful technology.
Highly efficient and green approach for the synthesis of spirooxindole derivatives in the presence of novel Brønsted acidic ionic liquids incorporated in UiO‐66 nanocages
作者:Boshra Mirhosseini‐Eshkevari、Mohammad Ali Ghasemzadeh、Manzarbanoo Esnaashari
DOI:10.1002/aoc.5027
日期:2019.8
An efficient and green approach is reported for the rapid synthesis of spirocyclic 2‐oxindole using triethylenediamine or imidazole Brønsted acidic ionicliquids supported in Zr metal–organic framework (TEDA/IMIZ‐BAIL@UiO‐66) as a novel, superior and retrievable heterogeneous catalyst under ultrasonic irradiation. Heterocyclic compounds including pyrido[2,3‐d:6,5‐d′]dipyrimidines and indeno[2′,1′:5
据报道,一种高效,绿色的方法可使用三亚乙基二胺或咪唑布朗斯台德酸性离子液体快速合成螺环2-氧吲哚,并在Zr金属-有机骨架(TEDA / IMIZ-BAIL @ UiO-66)中作为新型,优良且可回收的异质化合物超声辐射下的催化剂。杂环化合物,包括吡啶并[2,3- d:6,5- d ']双嘧啶和茚并[2',1':5,6]吡啶[2,3- d ]]嘧啶是通过6-氨基-1,3-二甲基尿嘧啶,靛红和环状1,3-二酮(巴比妥酸或1,3-茚满二酮)的一锅缩合反应获得的。催化剂的可重复使用性,低的催化剂负载量,短的反应时间,优异的产率,简单的后处理以及使用声化学方法作为温和的方法和替代能源是该方法的一些优点。此外,使用各种技术对新型异质纳米复合材料进行了全面表征。
Magnetic, Acidic, Ionic Liquid-Catalyzed One-Pot Synthesis of Spirooxindoles
作者:Ali Khalafi-Nezhad、Somayeh Mohammadi
DOI:10.1021/co400080z
日期:2013.9.9
Magnetic, supported, acidic ionic liquid was synthesized and identified as an efficient catalyst for the one-pot synthesis of novel spirooxindole derivatives at mild conditions and in good yields. Three component reaction of wide variety of substituted isatins, 1,3-dimethyl-2-amino uracil, and barbituric acid, thiobarbituric acid, and dimedon as 1,3-dicarbonyl compounds gives the target compounds.