Widely used in Suzuki-Miyaura cross-coupling reactions, this compound serves as a key intermediate in the synthesis of complex indole derivatives. Its boronate ester group enables efficient carbon-carbon bond formation under mild conditions, making it valuable in pharmaceutical and agrochemical research. The presence of the tosyl group stabilizes the nitrogen atom and enhances reactivity and selectivity during coupling. It is particularly useful for constructing biaryl systems found in bioactive molecules and functional materials. Due to its stability and reactivity profile, it supports high-yielding transformations with various aryl halides, facilitating rapid access to diverse indole-based structures in drug discovery and development.