Interaction of <i>gem</i>
-Difluorinated Iodides with Silyl Enol Ethers Mediated by Photoredox Catalysis
作者:Grigory N. Chernov、Vitalij V. Levin、Vladimir A. Kokorekin、Marina I. Struchkova、Alexander D. Dilman
DOI:10.1002/adsc.201700423
日期:2017.9.4
A method for the synthesis of β,β‐difluorinated ketones by coupling of α,α‐difluorinated iodides with silyl enol ethers is described. The reaction is performed in the presence of iridium(III) photocatalysts under the irradiation with 400 nm light emitting diodes.
Photoredox Fluoroalkylation of Arylidene and Alkylidene Amidrazones
作者:Vyacheslav I. Supranovich、Grigory N. Chernov、Vitalij V. Levin、Alexander D. Dilman
DOI:10.1002/ejoc.201901672
日期:2020.1.23
Fluoroalkylation of the C–H bond of azomethine compounds obtained from condensation of aldehydes and N‐methylpyrrolidinone‐derived amidrazones is described.
Photoredox Activation of Organozinc Reagents: Barbier-Type Reaction of Alkyl Halides with α-(Trifluoromethyl)styrenes
作者:Anton A. Gladkov、Grigory N. Chernov、Vitalij V. Levin、Vladimir A. Kokorekin、Alexander D. Dilman
DOI:10.1021/acs.orglett.1c03917
日期:2021.12.17
Organozinc reagents may be activated under blue light irradiation using an organic photocatalyst to generate alkyl radicals. The radicals are trapped by α-(trifluoromethyl)styrenes leading to gem-difluorinated products after elimination of fluoride. The reaction can be conveniently performed under Barbier conditions starting from organic iodides and bromides and elemental zinc.