Oxidative fluorination with Selectfluor: A convenient procedure for preparing hypervalent iodine(V) fluorides
Samuel M G Dearman1, Xiang Li2, Yang Li2
1School of Chemistry, University of Leicester, Leicester, LE1 7RH, UK.
Abstract:
The ability to investigate hypervalent iodine(V) fluorides has been limited primarily by their difficult preparation traditionally using harsh fluorinating reagents such as trifluoromethyl hypofluorite and bromine trifluoride. Here, we report a mild and efficient route using Selectfluor to deliver hypervalent iodine(V) fluorides in good isolated yields (72-90%). Stability studies revealed that bicyclic difluoro(aryl)-λ5-iodane 6 was much more stable in acetonitrile-d 3 than in chloroform-d 1, presumably due to acetonitrile coordinating to the iodine(V) centre and stabilising it via halogen bonding.
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