This potassium trifluoroborate compound serves as a versatile organoboron reagent in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions. It enables the efficient introduction of the 3-[(4-methoxyphenyl)amino]-3-oxopropyl group into aromatic systems, facilitating the construction of complex molecules for pharmaceuticals, agrochemicals, and bioactive compounds. As a stable and air-tolerant borate intermediate, it offers precise control in C-C bond formation, enhancing selectivity and yield in medicinal chemistry applications. Its role extends to advanced synthetic methodologies in research and industrial processes.