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.
功能化SBA-15(在修饰的SBA-15上固定钯)已被用作通过异吲哚酮、环状-1,3-二酮和6-氨基-1,3-二甲基尿嘧啶在水中超声辐照下的多组分反应高效制备螺环吲哚啉的催化剂。该催化剂通过X射线衍射光谱(XRD)、场发射扫描电子显微镜(FE-SEM)、透射电子显微镜(TEM)、能谱X射线光谱(EDX)、X射线光电子光谱(XPS)、傅里叶变换红外光谱(FT-IR)、氮气吸附分析、程序升温脱附(TPD)和热重分析(TGA)进行了表征。该方法的优势包括催化剂的可重复使用性、低催化剂负载量、短时间内优异的产率、产品易于分离以及将超声辐照作为一项有价值且强大的技术。