[Ag]2[B12Cl12] as a Catalyst in PhICl2 Mediated Chlorination

The weakly coordinating [B 12 Cl 12 ] 2- originates from a family of carboranes typically reserved for application in coordination chemistry. Here, we show its readily accessible Ag(I) salt, [Ag] 2 [B 12 Cl 12 ], can be used as a catalyst in the PhICl 2 mediated chlorination of arenes, alkenes, and alkynes. The promising activity displayed by [Ag] 2 [B 12 Cl 12 ] over a variety of commercially available Ag(I) sources merits its incorporation to the toolkit of commonly screened silver catalysts in synthesis.