Citric acid stabilized on the surface of magnetic nanoparticles as an efficient and recyclable catalyst for transamidation of carboxamides, phthalimide, urea and thiourea with amines under neat conditions
作者:Marzban Arefi、Maryam Kazemi Miraki、Ramin Mostafalu、Mohammad Satari、Akbar Heydari
DOI:10.1007/s13738-018-1523-8
日期:2019.2
and environmentally benign heterogeneous catalyst for the transamidation of carboxamides, phthalimide, urea and thiourea with amines. Several derivatives of formylated and transamidated products were synthesized in good to excellent yields in the presence of this catalytic system. And, the catalyst could be easily separated from the reaction mixture using an external magnet and can be reused six times
摘要成功制备并表征了柠檬酸包覆的磁性纳米粒子(Fe 3 O 4 -CA NPs)。该磁性纳米催化剂被用作一种高效,可回收且对环境无害的非均相催化剂,用于羧酰胺,邻苯二甲酰亚胺,尿素和硫脲与胺的氨基转移。在该催化体系的存在下,合成了甲酰化和酰胺化产物的几种衍生物,收率良好至优异。并且,可以使用外部磁体将催化剂容易地从反应混合物中分离出来,并且可以重复使用六次而不会显着降低其催化活性。 图形概要