Copper immobilized on biomimetic assembled calcium carbonate/carboxymethylcellulose hybrid: a highly active recoverable catalyst for CuAAC reactions
作者:Mingjuan Zhang、Jinxi Xu、Tianzhu Zhang、Yiqun Li
DOI:10.1007/s11164-021-04474-y
日期:2021.9
such as FT-IR, XRD, SEM, EDX, EDX-mapping, TEM, and TGA techniques. In the presence of low copper loading of CuII@CMC/CaCO3 hybrid, benzylic halides, azide, and alkynes proceeded smoothly to afford 1,4-disubstituted 1,2,3-triazoles in high yields. The catalyst can be conveniently recovered from the reaction mixture by filter and reused for at least 5 consecutive runs with a slight drop in its catalytic
本文已经描述了固定在仿生组装的羧甲基纤维素/碳酸钙杂化物上的新型铜(Cu II @ CMC / CaCO 3),作为用于合成1,2,3-三唑的有效多相催化剂。Cu II @ CMC / CaCO 3的制备是通过以羧甲基纤维素钠(CMC-Na)为模板和离子交换剂的生物启发矿化过程完成的,而Cu(II)的复分解,成核,组装,杂交和固定化通过在室温下在水中成功地用CaCl 2,Na 2 CO 3和CuSO 4进行处理而产生的碳。生成的Cu II @ CMC / CaCO通过各种分析(例如FT-IR,XRD,SEM,EDX,EDX映射,TEM和TGA技术)很好地表征了3型混合动力车。在Cu II @ CMC / CaCO 3杂化物的铜负载量低的情况下,苄基卤化物,叠氮化物和炔烃平稳进行,以高收率得到1,4-二取代的1,2,3-三唑。催化剂可通过过滤器方便地从反应混合物中回收,并至少连续5次重复使用