Alkyl halides react with dialkyl copper reagent to give

The Corey-House synthesis process is the reaction between the organocopper reagent, usually a lithium dialkylcuprate as prepared above, and a second alkyl (pseudo)halide or an aryl iodide. This results in the formation of a C–C bond between the two organic fragments: Li⁺[R–Cu–R]^– + R'–X → R–R' + "RCu" + LiX.