Efficient nickel(II) immobilized on EDTA‐modified Fe3O4@SiO2 nanospheres as a novel nanocatalyst for amination of heteroaryl carbamates and sulfamates through the cleavage of C-O bond
作者:Iman Dindarloo Inaloo、Sahar Majnooni、Hassan Eslahi、Mohsen Esmaeilpour
DOI:10.1016/j.mcat.2020.110915
日期:2020.8
In this report, there was immobilized Nickel(II) on EDTA‐modified Fe3O4@SiO2 nanospheres and catalytic activity of which was described in the arylation reaction of nitrogen nucleophiles via carbon-oxygen bond cleavage of (hetero)aryl carbamates and sulfamates. This protocol was applied to various nitrogen nucleophiles such as amines, anilines and N-heterocyclic compounds (pyrroles, indoles and imidazoles)
在此报告中,镍(II)被固定在EDTA修饰的Fe 3 O 4 @SiO 2纳米球上,其催化活性在氮亲核体通过(杂)芳基氨基甲酸酯的碳-氧键裂解形成的芳基化反应中得到描述。氨基磺酸盐。该方案适用于各种氮亲核试剂,例如胺,苯胺和N-杂环化合物(吡咯,吲哚和咪唑),收率高至优异。在简单温和的条件下,无需使用任何外部配体即可促进该反应。FT-IR,XRD,TEM,FE-SEM,TGA,DLS,XPS,VSM,EDX,ICP和氮吸附-解吸等温线分析对合成的催化剂进行了很好的表征。再循环研究表明,通过使用外部磁场可以很容易地回收催化剂,并且可以直接重复使用至少7次,而不会显着降低其催化活性。