Widely used as a highly efficient arylating agent in organic synthesis, particularly in the construction of biaryl frameworks through metal-free C–H functionalization. It enables the direct coupling of arenes under mild conditions, making it valuable in pharmaceutical and agrochemical research where complex aromatic systems are common. Its triflate counterion enhances solubility and reactivity in polar organic solvents, facilitating reactions such as aryl transfer to heteroarenes and electron-rich aromatics. Due to its stability and selectivity, it is favored in late-stage functionalization of bioactive molecules, allowing for rapid diversification without the need for transition metal catalysts.