Photocatalytic Reductive Fluoroalkylation of Nitrones
作者:Vyacheslav I. Supranovich、Vitalij V. Levin、Marina I. Struchkova、Alexander D. Dilman
DOI:10.1021/acs.orglett.7b03987
日期:2018.2.2
A method for the addition of fluorinated groups to nitrones using an iridium photocatalyst and ascorbic acid as a stoichiometric reducing agent is described. The reaction proceeds through the generation of fluorinated radicals by single-electron reduction of fluorinated alkyl iodides with an iridium complex mediated by visible light. Besides perfluorinated reagents, partially fluorinated alkyl iodides
<i>α</i>-(Trifluoromethyl)amine Derivatives via Nucleophilic Trifluoromethylation of Nitrones
作者:Derek W. Nelson、James Owens、Diana Hiraldo
DOI:10.1021/jo000685l
日期:2001.4.1
(Trifluoromethyl)trimethylsilane (TMSCF(3)) reacts with nitrones to afford alpha-(trifluoromethyl)hydroxylamines protected as O-trimethylsilyl ethers. Potassium t-butoxide initiates the nucleophilic trifluoromethylation. The reaction works best with alpha,N-diaryl nitrones, and the conditions are compatible with a range of substituents on the aryl groups. Acidic deprotection of the nitrone/TMSCF(3)