These are aryl iodides that contain two aryl groups bonded to iodine. The presence of iodine makes them excellent leaving groups, and their stability allows for safe handling and storage. The aryl groups can be various substituents, and the choice of diaryliodonium salt can impact the regioselectivity and efficiency of the arylation.
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Propanedioic acid, methyl(4-methylphenyl)-, diethyl ester
1,2,5-tri-(4-nitrophenyl)-1H-pyrazole
