Used as a reagent in organic synthesis, particularly in conjugate addition reactions of organocopper compounds to α,β-unsaturated carbonyl compounds. It enables the formation of carbon-carbon bonds with high selectivity, especially in the synthesis of complex molecules such as natural products and pharmaceuticals. Its reactivity is milder compared to other organocopper reagents, allowing for better functional group tolerance. Commonly employed in the preparation of chiral intermediates when combined with asymmetric ligands. Also utilized in cross-coupling reactions under palladium-free conditions.