Novel design of recyclable copper(II) complex supported on magnetic nanoparticles as active catalyst for Beckmann rearrangement in poly(ethylene glycol)

作者：Keyhaniyan Mahdi; Shiri Ali^*; Eshghi Hossein; Khojastehnezhad Amir

来源：Applied Organometallic Chemistry, 2018, 32(6): e4344.

DOI：10.1002/aoc.4344

• aldoximes
• amides
• Beckmann rearrangement
• Fe3O4@SiO2-Lig-Cu
• magnetic core-shell nanoparticles

Copper complex-functionalized magnetic core-shell nanoparticles (Fe3O4@SiO2-Lig-Cu) were prepared and characterized using various techniques. The activity of the new catalyst was tested for the Beckmann rearrangement. The reaction conditions allow for the conversion of a wide variety of aldoximes, including aromatic and heterocyclic ones, to amides in good to excellent yields. High efficiency, mild reaction conditions, easy work-up, use of poly(ethylene glycol) as a green medium and simple purification of products are important advantages of this system. Moreover, the eco-friendly heterogeneous nanocatalyst could be easily recovered from the reaction mixture using an external magnet and reused several times.

• 出版日期2018-6