Radical cation reactions associated with the thiocarbonyl group
作者:Derek H.R. Barton、Peter I. Dalko、Stephan D. Géro
DOI:10.1016/s0040-4039(00)74167-0
日期:1992.3
The radicalcationreactions of different thiocarbonyl compounds were examined. Compounds 7, 8, 11, 14 and 18 underwent a radicalcation fragmentation in a photoinduced electron transfer (PET) reaction, in the presence of tris(4-bromophenyl)aminium hexachloroantimonate.
A red-light-mediated Barton–McCombiereaction is described, in which chlorophyll a is used as a photocatalyst and tris(trimethylsilyl)silane or Hantzsch ester is used as the hydrogen source. The re...
描述了红光介导的 Barton-McCombie 反应,其中叶绿素 a 用作光催化剂,三(三甲基甲硅烷基)硅烷或 Hantzsch 酯用作氢源。那里...
Radical Deuteration with D<sub>2</sub>O: Catalysis and Mechanistic Insights
作者:Valentin Soulard、Giorgio Villa、Denis Patrick Vollmar、Philippe Renaud
DOI:10.1021/jacs.7b12105
日期:2018.1.10
Selective incorporation of deuterium atoms into molecules is of high interest for labeling purposes and for optimizing properties of drug candidates. A mild and environmentally benign method for the deuteration of alkyl iodides via radical pathway using D2O as source of deuterium has been developed. The reaction is initiated and mediated by triethylborane in the presence of dodecanethiol as a catalyst
Deoxygenative Borylation of Secondary and Tertiary Alcohols
作者:Florian W. Friese、Armido Studer
DOI:10.1002/anie.201904028
日期:2019.7.8
Two different approaches for the deoxygenative radical borylation of secondary and tertiary alcohols are presented. These transformations either proceed through a metal‐free silyl‐radical‐mediated pathway or utilize visible‐light photoredox catalysis. Readily available xanthates or methyl oxalates are used as radical precursors. The reactions show broad substrate scope and high functional‐group tolerance