Their discoverer found that they have the ability to decolor solutions of Michler ketones, and adding cyanide as a dummy ligand improves their economy. Adding 12-crown-4 to solutions of these compounds forces them into a linear configuration, while methyl ones adopt an 8-member ring structure in ether solutions.  They couple to an alkyl halide in the Corey-House-Posner- Whitesides reaction, and these compounds give exclusive 1,4-addition to alpha- beta unsaturated ketones, making them more regio
Their discoverer found that they have the ability to decolor solutions of Michler ketones, and adding cyanide as a dummy ligand improves their economy. Adding 12-crown-4 to solutions of these compounds forces them into a linear configuration, while methyl ones adopt an 8-member ring structure in ether solutions.  They couple to an alkyl halide in the Corey-House-Posner- Whitesides reaction, and these compounds give exclusive 1,4-addition to alpha- beta unsaturated ketones, making them more regioselective than Grignard reagents. They're usually prepared in THF at negative 78 degrees by adding two equivalents of an organolithium reagent to copper iodide. For 10 points, name these organocuprate reagents named for an American chemist.
Their discoverer found that they have the ability to decolor solutions of Michler ketones, and adding cyanide as a dummy ligand improves their economy.
{Gilman} reagents (accept {organocuprates} before mention)