Magnetically separable Ni/Fe3O4: An efficient catalyst for phenoxy carbonylation of aryl iodides using bifunctional o‐chlorophenyl formate as a CO source

Abstract

This work reports the phenoxy carbonylation reactions for the synthesis of aryl esters using magnetically separable nickel supported on Fe3O4. The two main advantages of this process are the use of an inexpensive nickel catalyst and the application of o‐chlorophenyl formate as a both CO source and phenol as a coupling partner. This catalyst is entirely magnetically separable due to the super paramagnetic nature of Fe3O4 and decent reusability potential for up to eight cycles with minimal drops in yields. This protocol tolerates various functionalities of aryl iodides and provided moderate to good yields of corresponding esters. The as‐prepared Ni/Fe3O4 nanoparticles have been characterized using analytical techniques such as FESEM, EDS, TEM, XRD, ICP‐OES, and XPS.