Reductive C–C Coupling by Desulfurizing Gold-Catalyzed Photoreactions
作者:Lumin Zhang、Xiaojia Si、Yangyang Yang、Sina Witzel、Kohei Sekine、Matthias Rudolph、Frank Rominger、A. Stephen K. Hashmi
DOI:10.1021/acscatal.9b01368
日期:2019.7.5
which cannot be efficiently accessed by previously reported methods. This mild and highlyefficient C–C bond formation strategy uses mercaptans both as electron-deficient alkyl radical precursor as well as the hydrogen source. Two examples of amino acids have also been modified by using this strategy. Moreover, this methodology could be applied in polymer synthesis. Gram-scale synthesis and mechanistic
Homobenzylic Oxygenation Enabled by Dual Organic Photoredox and Cobalt Catalysis
作者:Joshua B. McManus、Jeremy D. Griffin、Alexander R. White、David A. Nicewicz
DOI:10.1021/jacs.0c04422
日期:2020.6.10
Activation of aliphatic C(sp3)-H bonds in the presence of more activatedbenzylicC(sp3)-H bonds is often a nontrivial, if not impossible task. Herein we show that leveraging the reactivity of benzylicC(sp3)-H bonds to achieve reactivity at the homobenzylic position can be accomplished using dual organic photoredox/cobalt catalysis. Through a two-part catalytic system, alkyl arenes undergo dehydrogenation