Synthesis of a Range of Iodine(III) Compounds Directly from Iodoarenes

The first direct synthesis of an alkynyl(phenyl)iodonium salt from iodobenzene and an unprotected alkyne is described. The synthesis of the corresponding alkenyl(phenyl)iodonium salt is achieved from the TMS‐alkyne, simply by means of changing the solvent. The one‐pot synthesis of 1‐arylbenziodoxolones and other iodine(III) compounds from iodine(I) precursors is also presented.