B-Chlorocatecholborane is primarily used in organic synthesis as a versatile reagent, particularly in the formation of carbon-boron bonds. It is highly effective in borylation reactions, which are essential for creating organoboron compounds. These compounds are widely employed in cross-coupling reactions, such as Suzuki-Miyaura coupling, to construct complex organic molecules, including pharmaceuticals, agrochemicals, and advanced materials. Its reactivity and stability make it a valuable tool in the development of new chemical entities and in the modification of existing compounds for enhanced properties. Additionally, it is utilized in catalytic processes and as a precursor for other boron-containing reagents in synthetic chemistry.