Simple Three-Component Method for the Synthesis of Spiroindeno[1,2-<i>b</i>]pyrido[2,3-<i>d</i>]pyrimidine-5,3′-indolines
作者:Ghazaleh Imani Shakibaei、Afsaneh Feiz、Hamid Reza Khavasi、Ali Abolhasani Soorki、Ayoob Bazgir
DOI:10.1021/co1000053
日期:2011.1.10
An efficient, simple, and catalyst-free synthesis of spiroindeno[1,2-b]pyrido[2,3-d]pyrimidine-5,3′-indolines and spiroacenaphthylene-1,4′-indeno-1,5′-pyrido[2,3-d]pyrimidines by the three-component reaction of 1,3-indandione, amino uracils and isatins or acenaphthylene-1,2-dione in refluxing ethanol is reported.
螺啶[1,2- b ]吡啶基[2,3 - d ]嘧啶-5,3'-二氢吲哚和螺ac烯-1,4'-indeno-1,5'-的高效,简单且无催化剂的合成据报道,在回流的乙醇中,通过1,3-茚满二酮,氨基尿嘧啶和靛红或ena-1,2-二酮的三组分反应生成吡啶并[2,3- d ]嘧啶。
One-pot synthesis of indeno-fused spirooxindoles catalyzed by SBA-Oxime-Zn
作者:Sayed Ghorbani、Mohammad Hashemi
DOI:10.13005/ojc/31.special-issue1.22
日期:2015.10.30
An extremely efficient catalytic protocol for the synthesis of spirooxindole derivatives via a one-pot three component approach in the presence of SBA-Oxime-Zn, as a heterogeneous catalyst using water as a green solvent is reported. The catalyst exhibited excellent catalytic activity, and the proposed methodology is capable of providing the desired products in good yield and short reaction time. After reaction course, the catalyst can be recycled and reused without any apparent loss of activity which makes this process cost effective and hence eco-friendly.
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.