Fluoroalkyl sulfides as photoredox-active coupling reagents for alkene difunctionalization
作者:Mikhail D. Kosobokov、Mikhail O. Zubkov、Vitalij V. Levin、Vladimir A. Kokorekin、Alexander D. Dilman
DOI:10.1039/d0cc04617e
日期:——
A visible-light-promoted fluoroalkylation-thiolation of alkenes is described. A 4-tetrafluoropyridinylthio fragment serves as a photoredox-active group in the initiation step and undergoes a radical group transfer, which is important for the reaction efficiency. In the primary products, the pyridinylthio substituent may be further functionalized via radical processes or an aromatic substitution reaction
Photoredox Fluoroalkylation of Hydrazones in Neutral and Reductive Modes
作者:Boris A. Worp、Mikhail D. Kosobokov、Vitalij V. Levin、Alexander D. Dilman
DOI:10.1002/adsc.202001381
日期:2021.2.16
Visible light promoted fluoroalkylation of hydrazones using 4‐perfluoropyridine sulfides as fluoroalkyl radical sources is described. The process can proceed in neutral and reductive modes delivering either hydrazones or hydrazines, respectively, depending on structure of starting substrates and reaction conditions. For the reductive process, ascorbic acid is used as a terminal reductant, which recycles