4-Iodobenzoyl chloride is employed in the preparation of pyrroles by reaction with imines and acetylenes mediated by isocyanides using palladium catalysis. It is also used in the preparation of N-(1-benzylpyrrolidin-3-yl)arylbenzamides, potential human dopamine D4 antagonists. Further, it is used to prepare [2]rotaxane monomer and poly[2] rotaxane. In addition to this, it is important in the modification of poly(allylamine) in order to make the polymer X-ray visible.
