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Copper ferrite superparamagnetic nanoparticles as a heterogeneous catalyst for directed phenol/formamide coupling
Authors:Chung K. Nguyen  Ngon N. Nguyen  Kien N. Tran  Viet D. Nguyen  Tung T. Nguyen  Dung T. Le  Nam T.S. Phan
Affiliation:Faculty of Chemical Engineering, HCMC University of Technology, VNU-HCM, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Viet Nam
Abstract:The copper ferrite-catalyzed, directed coupling of ortho-arylated phenols and dialkylformamides in the presence of a peroxide oxidant is described. Acyclic and cyclic amides were compatible with the reaction conditions. The copper ferrite catalyst is heterogeneous since substantial leaching was not detected and re-use of the catalyst for 9 consecutive reactions proceeded without a significant decrease in yield. To the best of our knowledge, this transformation has not been previously performed under heterogeneous catalysis conditions.
Keywords:Copper ferrite  Heterogeneous catalyst  Formamide  Phenol
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