Used as a highly efficient arylating agent in organic synthesis, particularly for transferring the 4-chlorophenyl group under mild conditions. It is valuable in the preparation of biaryl compounds and functionalized arenes through transition-metal-free coupling reactions. Commonly applied in pharmaceutical and agrochemical research for constructing complex aromatic structures. Its stability and selectivity make it suitable for late-stage functionalization in drug discovery. Also employed in photochemical reactions where it acts as a source of aryl radicals upon light activation.