Ethyl copper (CuC2H5) is an organocopper compound consisting of copper in its +1 oxidation state (cuprous) bound to an ethyl group.

It can be generated by transmetallation by the reaction of copper(I) acetate with tetraethyl lead:[1] Methyl copper was obtained from methyl lithium and copper(I) iodide at low temperature.

[2] A copper ethyl complex has been characterized by X-ray crystallography.

[3]