Аннотация:Convenient synthesis of functionalized bis(2,2,2-trifl uoroethyl) phosphonates based on tris(2,2,2-trifl uoroethyl) phosphite using N-chloromethylamino carboxylic acids and carbonyl compounds has been developed. The resulting compounds containing function-alized N-amidomethyl and phosphoryl moieties have potential biological activity, and are of interest as ef ective extractants and polydentate chelating ligands, as well as components of lithium-ion battery electrolytes.