Copper-mediated trifluoromethylation of diaryliodonium salts with difluoromethyltriflate
作者:Jing-Yun Yang、Xiu-Hua Xu、Feng-Ling Qing
DOI:10.1016/j.jfluchem.2016.04.008
日期:2016.6
The reaction of diaryliodoniumsalts with difluoromethyltriflate in the presence of TBAT and CuTC gave the corresponding trifluoromethylated arenes in moderate yields. Compared to other difluorocarbene-derived trifluoromethylation reactions, the current one proceeded at mild reaction conditions (room temperature) within short reaction time (5 min).
A copper-catalyzedenantioselective arylalkynylation of alkenes with diaryliodonium salt and a monosubstituted alkyne is reported. The three-component coupling reactions proceed under mild reaction conditions with a broad substrate scope, leading to synthetically valuable 1,2-diaryl-3-butynes. The key to the success of this chemistry is the employment of the chiral bisoxazoline-phenylaniline (BOPA)
<i>N</i>
<sup>1</sup>
‐ and
<i>N</i>
<sup>3</sup>
‐Arylations of Hydantoins Employing Diaryliodonium Salts
<i>via</i>
Copper(I) Catalysis at Room Temperature
reported employing diaryliodonium triflates as aryl source using a copper(I) catalyst. The developed protocol is performable at room temperature and easily scalable. The robustness is confirmed with a wide range of substrate studies of both hydantoins and diaryliodonium salts. Sterically complicated ortho‐substituted diaryliodonium salts are also compatible with the reaction protocol.
Glycosyl Cross-Coupling with Diaryliodonium Salts: Access to Aryl <i>C</i>-Glycosides of Biomedical Relevance
作者:Duk Yi、Feng Zhu、Maciej A. Walczak
DOI:10.1021/acs.orglett.8b00475
日期:2018.4.6
A stereospecific cross-coupling reaction of anomeric nucleophiles with diaryliodonium triflates resulting in the synthesis of aryl C-glycosides is reported. This process capitalizes on a stereoretentive reaction of configurationally stable C1 stannanes and is promoted by a palladiumcatalyst in the presence of a bulky phosphine ligand that suppresses the undesired β-elimination. The utility of this