Ultrasound-Assisted Preparation of Copper(I) Oxide Nanocubes: High Catalytic Activity in the Synthesis of Quinazolines
作者:Amol B. Raut、Abhishek R. Tiwari、Bhalchandra M. Bhanage
DOI:10.1002/cctc.201601330
日期:2017.4.7
energy‐dispersive X‐ray spectroscopy, UV/Vis spectroscopy, differential scanning calorimetry with thermogravimetric analysis, and FTIR spectroscopy. The Cu2O nanocubes were employed as a heterogeneous nanocatalyst and were found to be highly active in the preparation of quinazolines by the tandem cyclization of 2‐bromobenzaldehydes with amidines under ligand‐free conditions. Various quinazolines could be prepared
提出了一种在室温下简便,绿色的超声辅助合成Cu 2 O纳米立方体的方法。使用XRD,SEM,TEM,能量色散X射线光谱,UV / Vis光谱,带热重分析的差示扫描量热法和FTIR光谱对Cu 2 O纳米立方体进行了表征。Cu 2 O纳米立方体被用作非均相纳米催化剂,并且在无配体的条件下,通过将2-溴苯甲醛与am串联环化,发现在制备喹唑啉中具有很高的活性。可以在非常短的时间内以优异的收率制备各种喹唑啉。此外,Cu 2纳米催化剂可以循环使用多达四次,而不会显着降低催化活性。