Staudinger ligation is a chemical reaction that involves the coupling of an azide and a phosphine to form a stable phosphine-imine adduct. This reaction is widely used in synthetic chemistry and materials science to form covalent bonds between molecular components. While Staudinger ligation is a commonly used term in the scientific community, there are other terms that can be used interchangeably to describe this reaction. Some synonyms for Staudinger ligation include azide-alkyne cycloaddition, click chemistry, and Huisgen cycloaddition. Regardless of the terminology used, the Staudinger ligation reaction remains a powerful tool for creating complex organic molecules and materials.