Palladium bromide is primarily used in organic synthesis as a catalyst, particularly in cross-coupling reactions such as the Suzuki and Heck reactions. These reactions are essential for forming carbon-carbon bonds, which are fundamental in the production of pharmaceuticals, agrochemicals, and advanced materials. Additionally, it serves as a precursor in the preparation of other palladium compounds, which are widely utilized in catalysis and material science. Its role in facilitating efficient and selective chemical transformations makes it valuable in research and industrial applications.