在这项工作中,成功制备了新型三核锰催化剂Fe 3 O 4 @NFC@NNSM-Mn( III ),并通过不同的技术(包括FT-IR、XRD、TEM、SEM、EDX、VSM和ICP 分析。已有报道使用磁性催化剂合成黄嘌呤衍生物。本方法的关键潜在兴趣包括反应时间短、产率高、催化剂的可回收性、易于后处理以及维持多种官能团的能力,这提供了经济和生态回报。此外,合成的催化剂还可作为可回收的三核催化剂用于40℃下的醇氧化反应。 Fe 3 O 4 @NFC@NNSM-Mn( III ) 的磁性催化活性可能归因于催化剂 Fe 3 O 4 @NFC@NNS-Mn( III ) 与三聚氰胺的协同效应。采用可持续且安全的低温、使用环保溶剂、无需使用任何添加剂以及催化剂至少连续六次运行的长期稳定性和磁性可回收性是当前绿色化学协议的优势。该方案是一种良性、环境友好的杂环合成方法。
Introduction of a novel dicationic Brönsted acidic ionic liquid based on pyrazine and its application in the synthesis of xanthenediones and 3, 4-dihydropyrimidin-2(1H)-ones under solvent-free conditions
作者:Seyyed Erfan Sadati Sorkhi、Mohammad M. Hashemi、Ali Ezabadi
DOI:10.1007/s11164-020-04089-9
日期:2020.4
acidic ionic liquid based on pyrazine has been prepared and characterized by FTIR, 1HNMR, 13C NMR, MS, thermal gravimetric and differential thermal gravimetric analysis and also Hammett acidity function. The prepared dicationic ionic liquid is found to be an efficient and reusable catalyst for the synthesis of xanthenediones and 3,4-dihydropyrimidin-2(1H)-ones under solvent-free conditions. The merits
制备了一种新型的吡嗪类布朗斯台德酸性离子液体,并通过FTIR,1 H NMR,13 C NMR,MS,热重分析和差示热重分析以及Hammett酸度函数进行了表征。发现所制备的阳离子型离子液体是在无溶剂条件下用于合成黄二酮和3,4-二氢嘧啶-2(1 H)-one的有效且可重复使用的催化剂。所开发方法的优点包括离子液体的新颖性,离子液体的易于制备,易于后处理,催化剂的可重复使用性,高收率,短的反应时间以及不存在有毒的有机溶剂。
One-pot three-component synthesis of 1,8-dioxooctahydroxanthenes and 14-Aryl-14Hdibenzo[a,j]xanthenes using a new nanostructure zeolite
significant advantages of the present method are high yields of products, short reaction time, easy separation of the catalyst from the reaction mixture, easy product isolation, solvent-free condition and reusability of the catalyst. Graphic abstract A new modifiedzeolite containing Fe nanoparticles loaded in zeolite X has been synthesized, characterized and applied in the synthesis of two series
Zinc oxide nanoparticles: A highly efficient and readily recyclable catalyst for the synthesis of xanthenes
作者:Javad Safaei-Ghomi、Mohammad Ali Ghasemzadeh
DOI:10.1016/j.cclet.2012.09.016
日期:2012.11
A novel and efficient route for the synthesis of 1,8-dioxooctahydroxanthenes and 14-aryl-14H-dibenzo[a,j]xanthenes is described through one-pot multi-component reaction of dimedone and 2-naphthol with various aryl aldehydes using ZnO nanoparticles undersolvent-freeconditions. This method provides a novel and improved pathway for the synthesis of xanthenes in the terms of excellent yields, short reaction
Introduction of a trinuclear manganese(<scp>iii</scp>) catalyst on the surface of magnetic cellulose as an eco-benign, efficient and reusable novel heterogeneous catalyst for the multi-component synthesis of new derivatives of xanthene
recyclability of the catalyst, easy workup, and the ability to sustain a variety of functional groups, which give economical as well as ecological rewards. Also, the synthesized catalyst was used as a recyclable trinuclear catalyst in alcohol oxidation reactions at 40 °C. The magneticcatalystactivity of Fe3O4@NFC@NNSM-Mn(III) could be attributed to the synergistic effects of the catalyst Fe3O4@NFC@NNS-Mn(III)
在这项工作中,成功制备了新型三核锰催化剂Fe 3 O 4 @NFC@NNSM-Mn( III ),并通过不同的技术(包括FT-IR、XRD、TEM、SEM、EDX、VSM和ICP 分析。已有报道使用磁性催化剂合成黄嘌呤衍生物。本方法的关键潜在兴趣包括反应时间短、产率高、催化剂的可回收性、易于后处理以及维持多种官能团的能力,这提供了经济和生态回报。此外,合成的催化剂还可作为可回收的三核催化剂用于40℃下的醇氧化反应。 Fe 3 O 4 @NFC@NNSM-Mn( III ) 的磁性催化活性可能归因于催化剂 Fe 3 O 4 @NFC@NNS-Mn( III ) 与三聚氰胺的协同效应。采用可持续且安全的低温、使用环保溶剂、无需使用任何添加剂以及催化剂至少连续六次运行的长期稳定性和磁性可回收性是当前绿色化学协议的优势。该方案是一种良性、环境友好的杂环合成方法。
Immobilization of Lewis acidic ionic liquid on perlite nanoparticle surfaces as a highly efficient solid acid catalyst for the solvent-free synthesis of xanthene derivatives
作者:L. Moradi、M. Mirzaei
DOI:10.1039/c9ra03312b
日期:——
modified with Lewis acidicionicliquid (perlite NP@IL/ZrCl4) through a two step procedure. The prepared solid acid catalyst was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX) and thermo gravimetric analysis (TGA). Perlite NP@IL/ZrCl4 was used as a new solid acid, reusable and green