Abstract
AbstractThe 2,2‐difluoroethyl group is an important lipophilic hydrogen bond donor in medicinal chemistry, but its incorporation into small molecules is often challenging. Herein, we demonstrate electrophilic 2,2‐difluoroethylation of thiol, amine and alcohol nucleophiles with a hypervalent iodine reagent, (2,2‐difluoro‐ethyl)(aryl)iodonium triflate, via a proposed ligand coupling mechanism. This transformation offers a complementary strategy to existing 2,2‐difluoroethylation methods and allows access to a wide range of 2,2‐difluoroethylated nucleophiles, including the drugs Captopril, Normorphine and Mefloquine.
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