This compound is primarily used in organic synthesis as a reagent for the Wittig reaction, a key method for forming alkenes from carbonyl compounds. It serves as a precursor for generating phosphonium ylides, which react with aldehydes or ketones to produce alkenes with high selectivity. Its application is particularly valuable in the synthesis of complex organic molecules, including pharmaceuticals, natural products, and fine chemicals. The bromotriphenylphosphoranyl group enhances its reactivity, making it a versatile tool for constructing carbon-carbon double bonds in a controlled manner. Additionally, it is employed in the preparation of conjugated systems and polymers, where precise alkene formation is critical.