(3-(Cyanomethyl)phenyl)boronic acid is primarily used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions. This reaction is widely employed in the pharmaceutical industry to form carbon-carbon bonds, enabling the synthesis of complex molecules, including drugs and bioactive compounds. The boronic acid group acts as a key intermediate, facilitating the coupling with aryl halides in the presence of a palladium catalyst. Additionally, it finds applications in the development of sensors and materials science, where its ability to interact with diols and other functional groups is utilized for detecting or binding specific molecules. Its cyanomethyl group further enhances its reactivity, making it a versatile building block in various chemical transformations.