Try making the enolate with sodium hydride (washed to remove mineral oil) and reacting with Cu(I)Cl or Cu(I)OTf. I don't know if any of the Cu(I) species have been isolated but in situ similar compounds have been used as catalysts for Cu(I) catalyzed Ullmann/Goldberg type aminations. See: J. AM. CHEM. SOC. 2006, 128, 8742-8743