Synthesis of pyrazol-quinazolinones and 2,3-dihydroquinazolin-4(1H)-ones using CoAl2O4 nanoparticles as heterogeneous catalyst
作者:Fatemeh Ahmadian、Alireza Barmak、Esmali Ghaderi、Masoumeh Bavadi、Hossein Raanaei、Khodabakhsh Niknam
DOI:10.1007/s13738-019-01729-9
日期:2019.12
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。