CuO nanoparticles supported on α-Fe2O3-modified CNTs: a magnetically separable catalyst for oxidative C–O coupling of formamides with 1,3-dicarbonyl compounds

Oxidative coupling of formamides with 1,3-dicarbonyl compounds to prepare enol carbamates was effected in the presence of CuO nanoparticles supported on α-Fe2O3-modified carbon nanotubes (CNTs@α-Fe2O3@CuO) as an environmentally friendly heterogeneous catalyst. The simple preparation, and the ability to be recycled and magnetically separated are salient features of this catalytic system.