PhI(OTf) has been used for the past 30 years as a strong I(III) oxidant for organic and inorganic transformations. It has been reported to be generated in situ from the reactions of either PhI(OAc) or PhI=O with two equivalents of trimethylsilyl trifluoromethanesulfonate (TMS-OTf). In this report it is shown that neither of these reactions generate a solution with spectroscopic data consistent with PhI(OTf) , with supporting theoretical calculations, and thus this compound should not be invoked as the species acting as the oxidant for transformations that have been associated with its use.<p></p>
Funding
We thank La Trobe University and the Australian Research Council (FT16010007, DP200100013) for their generous funding of this work. We thank Dr. Christian Hering-Junghans for providing a 1HNMR of TMS-OAc in CD3CN.