Regio- and Stereoselective Radical Perfluoroalkyltriflation of Alkynes Using Phenyl(perfluoroalkyl)iodonium Triflates
作者:Xi Wang、Armido Studer
DOI:10.1021/acs.orglett.7b01215
日期:2017.6.2
A method for regio- and stereoselective anti-addition of the perfluoroalkyl and the triflate group of phenyl(perfluoroalkyl)iodonium triflates to alkynes is presented. The radical reaction uses cheap CuCl as a smart initiator and can be conducted in gram scale. The perfluoroalkyltriflated products are readily further functionalized, rendering this transformation valuable.
followed by the treatment with benzene or fluorobenzene and triflic acid. It was also shown that elemental fluorine was used as a substitute for the peracid. The use of fluorosulfonic, sulfuric, and methanesulfonic acids instead of triflic acid afforded the fluoroalkylaryliodonium fluorosulfonates 5, sulfates 6, and methanesulfonate 7, respectively. Similarly perfluoroalkylene-α,ω-bisaryliodonium triflates
Perfluoroalkylations of Carbanions with (Perfluoroalkyl)phenyliodonium Triflates (FITS Reagents)
作者:Teruo Umemoto、Yoshihiko Gotoh
DOI:10.1246/bcsj.59.439
日期:1986.2
smoothly with enolate anions of active methylene compounds such as 2-methyl-1,3-cyclopentanedione, ethyl 2-methylacetoacetate, and ethyl2-oxocyclopentanecarboxylate in a polar solvent to afford O- and C-perfluoroalkylation products in moderate yields, ratios O-/C-Rf products depending on the reaction temperature. Anions of diethyl 2-methylmalonate and 2-nitropropane afforded C-Rf-compounds only.