Metal-free trifluoromethylthiolation of arenediazonium salts with Me4NSCF3
作者:Giulia Bertoli、Benjamin Exner、Mathies V. Evers、Kristina Tschulik、Lukas J. Gooßen
DOI:10.1016/j.jfluchem.2018.03.011
日期:2018.6
A metal-free entry to the pharmaceutically meaningful substrate class of trifluoromethyl thioethers has been developed starting from widely available arenediazoniumsalts and commercially available Me4N+SCF3−. This reaction proceeds within one hour at 0 °C and is applicable to a wide range of functionalized substrates.
ditellurides, aryl iodides, and aryl(perfluoroalkyl)tellanes has been described, the application of this TCICA/KF methodology to aryl(perfluoroalkyl)sulfanes and selanes remains an area of unexplored chemical space. Accordingly, to address the "missinglinks" in the developing series of chalcogen-based substrate reactivity, we report mild syntheses of metastable difluoro(aryl)(perfluoroalkyl)-λ4 -sulfanes
Photoredox-Mediated, Nickel-Catalyzed Trifluoromethylthiolation of Aryl and Heteroaryl Iodides
作者:Christopher S. Gravatt、Jeffrey W. Johannes、Eric R. King、Avipsa Ghosh
DOI:10.1021/acs.joc.2c00631
日期:2022.7.15
While trifluoromethylthiolation of aryl halides has been extensively explored, the current methods require complex and/or air-sensitive catalysts. Reported here is a method employing a bench-stable Ni(II) salt and an iridium photocatalyst that can mediate the trifluoromethylthiolation of a wide range of electronically diverse aryl and heteroaryl iodides, likely via a Ni(I)/Ni(III) catalytic cycle.