Corrigendum to "Copper ferrite superparamagnetic nanoparticles as a heterogeneous catalyst for directed phenol/formamide coupling" [Tetrahedron Lett. 58 (2017) 3370–3373]. (22nd June 2021) - Nguyen, Chung K.; Nguyen, Ngon N.; Tran, Kien N.; Nguyen, Viet D.; Nguyen, Tung T.; Le, Dung T.; Phan, Nam T.S.