Design and synthesis of magnetic Fe<sub>3</sub>O<sub>4</sub>@NFC-ImSalophCu nanocatalyst based on cellulose nanofibers as a new and highly efficient, reusable, stable and green catalyst for the synthesis of 1,2,3-triazoles
作者:Pouya Ghamari kargar、Ghodsieh Bagherzade、Hossein Eshghi
DOI:10.1039/d0ra06251k
日期:——
VSM, and ICP spectroscopy. This catalyst shows the dual function of the metal sites and imidazolium moieties. The catalytic system mentioned above also showed excellent activity in the synthesis of bis 1,4-disubstituted 1,2,3-triazoles. Moreover, the catalyst could be recycled and reused for four cycles without any decrease in its catalytic activity.
Fe 3 O 4 @NFC-ImSalophCu催化剂作为一种高度稳定、可重复使用、活性高的绿色催化剂,用于苯甲酰溴、叠氮化钠和炔烃的一锅三组分反应合成1,2,3-三唑类化合物。制备了含有咪唑鎓离子相的Cu( II )-席夫碱配合物,并将其修饰在核壳Fe 3 O 4 @NFC磁性纳米粒子(Fe 3 O 4 @NFC-ImSalophCu)上,并用作高效催化剂。采用 FT-IR 光谱、FE-SEM、TEM、XRD 光谱、EDX 光谱、VSM 和 ICP 光谱对非均相催化剂进行了表征。该催化剂显示出金属位点和咪唑鎓部分的双重功能。上述催化体系在双1,4-二取代1,2,3-三唑的合成中也表现出优异的活性。此外,该催化剂可以回收并重复使用四个周期,其催化活性没有任何降低。