Aryl pyrazolone thioethers were synthesized via the I₂-catalysed cross-coupling of pyrazolones with aryl sulphonyl hydrazides in the presence of p-toluenesulphonic acid, which has been proposed to promote the reaction by facilitating the decomposition of sulphonyl hydrazides.

The combination of visible light photoredox catalysis with direct difluoromethylation has allowed the synthesis of a large choice of CF₂H-containing value-added molecules under very mild reaction conditions.

Iodine-catalyzed thiolation of electron-rich aromatics, including substituted anisole, thioanisole, phenol, toluene, and naphthalene, using sulfonyl hydrazides as sulfenylation reagents was carried out.