2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenol, commonly known as TMDBP, is a chemical compound belonging to the class of phenolic boronic esters. Its molecular structure comprises a phenolic hydroxyl group attached to a phenyl ring bearing a boron-containing cyclic ester moiety. This compound holds significance in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions, where it serves as a valuable boronic ester reagent. Additionally, its stable cyclic boronate structure and sterically hindered nature make it useful in designing ligands for transition metal-catalyzed reactions and in the development of functional materials.