Anchoring of Cu (II)‐Schiff base complex on magnetic mesoporous silica nanoparticles: catalytic efficacy in one‐pot synthesis of 5‐substituted‐1H‐tetrazoles, antibacterial activity evaluation and immobilization of α‐amylase
作者:Ameneh Ahmadi、Tahereh Sedaghat、Hossein Motamedi、Roya Azadi
DOI:10.1002/aoc.5572
日期:2020.5
with Cu (II) Schiff base complex were synthesized. The new organic–inorganic hybrid nanocomposite was characterized by FT‐IR, PXRD, AAS, BET, TGA, VSM, FE‐SEM, HRTEM and EDX techniques. Then, the performance of this copper based magnetic nanocatalyst was investigated for the synthesis of 5‐substituted 1H‐tetrazole derivatives using one pot three‐component reactions of various aldehydes, hydroxyl amine
制备了磁性介孔二氧化硅纳米复合材料Fe 3 O 4 @ MCM-41,并用N-(2-氨基乙基)-3-氨基丙基三甲氧基硅烷(AEAPS)进行了功能化。然后,先将5,5'-亚甲基双(水杨醛)缩合,然后再用苯肼与Fe 3 O 4 @ MCM-41-AEAPS缩合,合成席夫碱接枝的纳米颗粒。最后,通过添加Cu(CH 3 COOH)2 .H 2O,合成了用Cu(II)Schiff碱配合物官能化的磁性纳米粒子(MNP)。这种新的有机-无机杂化纳米复合材料具有FT-IR,PXRD,AAS,BET,TGA,VSM,FE-SEM,HRTEM和EDX技术的特点。然后,研究了这种铜基磁性纳米催化剂的性能,该反应使用了多种醛,羟胺盐酸盐和叠氮化钠的一锅三组分反应,合成了5个取代的1 H-四唑衍生物。通过施加外部磁体,可以容易地将催化剂从反应混合物中分离出来,并重复使用至少5次,而不会明显降低催化活性。同样,负载链