2,3,4-Trichlorophenylboronic acid is primarily utilized in organic synthesis as a versatile building block, particularly in Suzuki-Miyaura cross-coupling reactions. These reactions are essential for forming carbon-carbon bonds, enabling the synthesis of complex organic molecules, including pharmaceuticals, agrochemicals, and advanced materials. Its trichlorophenyl group enhances stability and reactivity, making it a valuable reagent in the preparation of biaryl compounds. Additionally, it finds use in the development of sensors and catalysts due to its ability to interact with various organic and inorganic substrates. Its applications extend to research and industrial settings, where it contributes to the creation of novel compounds with tailored properties.