Used as an intermediate in organic synthesis, particularly in cross-coupling reactions such as Suzuki or Stille couplings, where the iodine moiety serves as a reactive site for forming carbon-carbon bonds. The tert-butyl ester group provides stability and can be selectively deprotected under acidic conditions, making it useful in multi-step synthesis of pharmaceuticals and fine chemicals. Commonly employed in the preparation of biaryl compounds and functionalized aromatic systems found in bioactive molecules.