Fluorinated functionality: The copper‐catalyzed oxidative trifluoromethylthiolation of aryl boronicacids with TMSCF3 and elemental sulfur at room temperature is described for the first time. This reaction provides a concise and efficient method for the synthesis of aryl trifluoromethyl thioethers (ArSCF3) under mild conditions. Phen=Phenanthroline.
Visible-light-promoted <i>S</i>-trifluoromethylation of thiophenols with trifluoromethyl phenyl sulfone
作者:Zhiqiang Wei、Zhengzhao Lou、Chuanfa Ni、Wei Zhang、Jinbo Hu
DOI:10.1039/d2cc03921d
日期:——
Trifluoromethyl phenyl sulfone is traditionally a nucleophilic trifluoromethylating agent. Herein, we report the first example of the use of trifluoromethyl phenyl sulfone as a trifluoromethylradical precursor. Arylthiolate anions can form electron donor–acceptor (EDA) complexes with trifluoromethyl phenyl sulfone, which can undergo an intramolecular single electron transfer (SET) reaction under visible
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.
An efficient trifluoromethylthiolation reaction of arylboronic acids with (bpy)CuSCF3 in the presence of oxygen at room temperature is described. This method produces a variety of aryl trifluoromethylthioether derivatives in good to high yield. The mechanism of this trifluoromethylthiolation is discussed as well. (C) 2017 Elsevier B.V. All rights reserved.