Subtle factors are important: radical formation and transmetallation in reactions of butyl cuprates with cyclohexyl iodide†
Abstract
The reactions of Bu2CuLi·LiI and Bu2CuLi·LiCN with cyclohexyl iodide are critically dependent upon subtle factors such as the surface properties of the reaction vessel, nature of the solvent still and lot of ‘ultrapure’ copper salt in addition to major effects such as the Li counterion.