Synthesis of silver–graphene nanocomposite and its catalytic application for the one-pot three-component coupling reaction and one-pot synthesis of 1,4-disubstituted 1,2,3-triazoles in water
作者:Noor Salam、Arjyabaran Sinha、Anupam Singha Roy、Paramita Mondal、Nikhil R. Jana、Sk Manirul Islam
DOI:10.1039/c3ra47466f
日期:——
reaction between in situ generated azides (derived from anilines or amines) and terminal acetylenes. This solid silver–graphene catalyst has been characterized by TEM, Raman, XRD and UV-Visible absorption spectra. The developed catalyst is air-stable, inexpensive, easy to prepare and can be facilely recovered and reused five times without significant decrease in activity and selectivity.
已经通过简单的化学路线合成了具有银纳米颗粒的石墨烯基复合材料,并且已经通过一锅法测试了其催化活性用于多组分反应和点击反应。这种银-石墨烯纳米复合材料在室温下对醛,炔烃和胺之间的三组分偶联(A 3偶联)和通过点击反应一锅法合成1,4-二取代的1,2,3-三唑显示出出色的催化活性。原位之间生成的叠氮化物(衍生自苯胺或胺)和末端乙炔。该固体银-石墨烯催化剂已通过TEM,拉曼光谱,XRD和UV-可见吸收光谱进行了表征。所开发的催化剂是空气稳定的,便宜的,易于制备的,并且可以容易地回收和重复使用五次而不会显着降低活性和选择性。