An Ullmann C-O Coupling Reaction Catalyzed by Magnetic Copper Ferrite Nanoparticles was written by Yang, Shuliang;Wu, Cunqi;Zhou, Hua;Yang, Yanqin;Zhao, Yongxia;Wang, Chenxu;Yang, Wei;Xu, Jingwei. And the article was included in Advanced Synthesis & Catalysis in 2013.COA of Formula: C11H9NO This article mentions the following:
Herein, an efficient method for the Ullmann C-O coupling reaction between various kinds of phenols and aryl halides, including amino, ketone, cyano, Me, methoxy, fluoro, chloro and bromo derivatives, is described. The catalyst used, copper ferrite (CuFe2O4) nanoparticles, are easily made, air-stable, and of low cost. The catalyst can be recycled easily just by using an external magnet. Even in the presence of sensitive substituents, the reaction proceeds successfully to provide the desired products in high yields without protection of other functional groups. In the experiment, the researchers used many compounds, for example, 2-Phenoxypyridine (cas: 4783-68-0COA of Formula: C11H9NO).
2-Phenoxypyridine (cas: 4783-68-0) belongs to pyridine derivatives. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. One of the examples of pyridines is the well-known alkaloid lithoprimidine, which is an A3 adenosine receptor antagonist and N,N-dimethylaminopyridine (DMAP) analog, commonly used in organic synthesis.COA of Formula: C11H9NO