Synthesis of 1,4‐Dicarbonyl Compounds by Visible‐Light‐Mediated Cross‐Coupling Reactions of α‐Chlorocarbonyls and Enol Acetates
作者:Qiang Liu、Rui‐Guo Wang、Hong‐Jian Song、Yu‐Xiu Liu、Qing‐Min Wang
DOI:10.1002/adsc.202000791
日期:2020.10.21
visible‐light‐mediatedradical coupling reactions of α‐chloroketones and enol acetates to afford 1,4‐dicarbonyl compounds, which are important precursors and intermediates in organic synthesis. The reaction involves photoredox‐catalyzed activation of the α‐chloroketone upon photoelectron transfer, carbon–chlorine bond cleavage, and coupling of the resulting radical with the carbon–carbon double bond of the
Visible-Light-Induced Photocatalytic Reductive Transformations of Organohalides
作者:Hyejin Kim、Chulbom Lee
DOI:10.1002/anie.201203599
日期:2012.12.3
A photo opportunity: A visible‐light‐excited iridium catalyst delivers electrons from an amine to an organohalide. The electron transfer then induces reductive scission of the carbon–halogen bond, generating the corresponding alkyl, alkenyl, and arylradical that can undergo cyclization and hydrodehalogenation reactions.