An Efficient, Convenient, and Solvent-Free Synthesis of 2,3-Dihydroquinazolin-4(<i>1 H</i>)-ones Using Montmorillonite-KSF Clay as a Heterogeneous Catalyst
作者:Sunil U. Tekale、Shivaji B. Munde、Sushama S. Kauthale、Rajendra P. Pawar
DOI:10.1080/00304948.2018.1462058
日期:2018.5.4
liquids 21 and ultrasound irradiation. Solvent-free or solid state reactions reduce environmental pollution and lower handling costs due to their operational simplicity and ease of work up procedures. These reactions can be performed by using the reactants alone or using clays, silica, alumina or other catalytic materials. Multicomponent reactions undersolvent-free conditions constitute an important tool
Access to enhanced catalytic core–shell CuO–Pd nanoparticles for the organic transformations
作者:Kanchan Mishra、Nagaraj Basavegowda、Yong Rok Lee
DOI:10.1039/c6ra03883b
日期:——
This paper describes the biosynthesis of core–shell CuO–Pd nanocatalysts with the aid of a Cyperus rotundus rhizome extract.
这篇论文描述了在鬼针草根茎提取物的帮助下合成核壳结构的CuO-Pd纳米催化剂。
Ethylenediamine diacetate-catalyzed three-component reaction for the synthesis of 2,3-dihydroquinazolin-4(1H)-ones and their spirooxindole derivatives
作者:Manchala Narasimhulu、Yong Rok Lee
DOI:10.1016/j.tet.2011.08.018
日期:2011.12
Ethylenediamine diacetate (EDDA)-catalyzed one-pot syntheses of biologically interesting 2,3-dihydroquinazolin-4(1H)-ones and their spirooxindole derivatives from isatoic anhydride, amines, and benzaldehydes or isatins via a three-component condensation in aqueous media have been described. This method is of great value because of high yields and ease of handling. (C) 2011 Elsevier Ltd. All rights reserved.
Synthesis of pyrazol-quinazolinones and 2,3-dihydroquinazolin-4(1H)-ones using CoAl2O4 nanoparticles as heterogeneous catalyst
AbstractThe preparation and characterization of cobalt aluminate (CoAl2O4) magnetic nanoparticles and its application as a catalyst for the synthesis of a novel class of pyrazol-quinazolinones and 2,3-dihydroquinazolin-4(1H)-ones is described. The structure of the catalyst was studied by Fourier transform infrared spectroscopy, transmission electron microscopy, X-ray diffraction, and vibrating sample
摘要描述了铝酸钴(CoAl 2 O 4)磁性纳米颗粒的制备,表征及其在合成新型吡唑-喹唑啉酮和2,3-二氢喹唑啉-4(1H)-ones催化剂中的应用。通过傅里叶变换红外光谱,透射电子显微镜,X射线衍射和振动样品磁力计分析研究了催化剂的结构。所得的铝酸钴(CoAl 2 O 4)是有效的催化剂,并以良好至优异的产率提供了所需的产物。而且,该催化剂可以容易地通过磁分离回收并循环四次而不会显着损失其催化活性。 图形摘要以CoAl 2 O 4为纳米颗粒非均相催化剂,在乙醇回流条件下,通过等规酸酐,芳族醛和胺的一锅缩合反应,合成了2,3-二氢喹唑啉-4(1H)-和一类新型的吡唑-喹唑啉酮。