Preparation, X-ray Structure, and Oxidative Reactivity of N-(2-Iodylphenyl)tosylamides and 2-Iodylphenyl Tosylate: Iodylarenes Stabilized by Ortho-Substitution with a Sulfonyl Group

New tosyl derivatives of 2-iodylaniline and 2-iodylphenol were prepared by the dimethyldioxirane oxidation of the corresponding 2-iodophenyltosylamides or 2-iodophenyl tosylate and isolated as stable, microcrystalline products. Single-crystal X-ray diffraction analysis of N-(2-iodylphenyl)-N,4-dimethylbenzenesulfonamide revealed pseudocyclic structure formed by intramolecular I···O interactions between the hypervalent iodine center and the sulfonyl oxygens in the tosyl group. This tosylamide has an excellent solubility in organic solvents and is a potentially useful hypervalent iodine oxidant.