(Phenyl)[o-(trimethylsilyl)phenyl]iodonium triflate. A new and efficient precursor of benzyne
Abstract
(Phenyl)[o-(trimethylsilyl)phenyl]iodonium triflate readily prepared from o-bis(trimethylsilyl)benzene and the hypervalent iodine(III) reagent [Phl(OAc)2·2TfOH] shows excellent formation of benzyne under mild and neutral conditions and efficiently provides adducts with typical trapping agents, e.g. furan, anthracene, diphenylisobenzofuran and tetraphenylcyclopentadienone.