Strategies to generate nitrogen-centered radicals that may rely on photoredox catalysis: development in reaction methodology and applications in organic synthesis

K Kwon, RT Simons, M Nandakumar… - Chemical …, 2021 - ACS Publications
For more than 70 years, nitrogen-centered radicals have been recognized as potent
synthetic intermediates. This review is a survey designed for use by chemists engaged in …

Visible light-driven radical-mediated C–C bond cleavage/functionalization in organic synthesis

XY Yu, JR Chen, WJ Xiao - Chemical Reviews, 2020 - ACS Publications
Thermal C–C bond cleavage reactions allow the construction of structurally diverse
molecular skeletons via predictable and efficient bond reorganizations. Visible light …

Photo-/electrocatalytic functionalization of quinoxalin-2 (1H)-ones

K Sun, F Xiao, B Yu, WM He - Chinese Journal of Catalysis, 2021 - Elsevier
The photo-/electrocatalytic functionalization of quinoxalin-2 (1H)-ones has emerged as a
promising and powerful approach for post-synthetic modification of quinoxalin-2 (1H)-ones …

Reactivity of oximes for diverse methodologies and synthetic applications

KA Rykaczewski, ER Wearing, DE Blackmun… - Nature …, 2022 - nature.com
Oximes are valuable synthetic building blocks with reactivity modes that enable their use in
diverse methodologies, from cycloadditions to bioconjugation. Their reactivity towards …

Recent Developments in Radical Cross‐Coupling of Redox‐Active Cycloketone Oximes

F Xiao, Y Guo, YF Zeng - Advanced Synthesis & Catalysis, 2021 - Wiley Online Library
Recent years have witnessed a renaissance of radical cross‐coupling of cycloketone
oximes which served as active cyanoalkyl radical via ring fragmentation in various …

Direct benzylation reactions from benzyl halides enabled by transition-metal-free photocatalysis

P Xiang, K Sun, S Wang, X Chen, L Qu, B Yu - Chinese Chemical Letters, 2022 - Elsevier
An SN 2-based photochemical strategy using dithiocarbamate anion as catalyst was
developed for the activation of benzyl halides, which are extremely challenging to be …

Metal-free visible-light-initiated direct C3 alkylation of quinoxalin-2 (1 H)-ones and coumarins with unactivated alkyl iodides

J Sun, H Yang, B Zhang - Green Chemistry, 2022 - pubs.rsc.org
We report, for the first time, a visible-light-promoted direct C3 alkylation of quinoxalin-2 (1H)-
ones and coumarins using readily accessible unactivated alkyl iodides as alkylation …

Photoredox-Catalyzed Cascade of o-Hydroxyarylenaminones to Access 3-Aminated Chromones

ZW Wang, Y Zheng, YE Qian, JP Guan… - The Journal of …, 2022 - ACS Publications
Reported herein is a photoredox-catalyzed amination of o-hydroxyarylenaminones with tert-
butyl ((perfluoropyridin-4-yl) oxy) carbamate, a versatile amidyl-radical precursor developed …

Recent Advances in Photocatalytic Functionalization of Quinoxalin‐2‐ones

J Rostoll‐Berenguer, G Blay… - European Journal of …, 2020 - Wiley Online Library
Visible‐light‐mediated chemical reactions have become highly popular in the last ten years.
This review covers the recent developments in visible‐light photofunctionalization of …

O-Perhalopyridin-4-yl Hydroxylamines: Amidyl-Radical Generation Scaffolds in Photoinduced Direct Amination of Heterocycles

L Zheng, YE Qian, YZ Hu, JA Xiao, ZP Ye, K Chen… - Organic …, 2021 - ACS Publications
Reported herein is the design and synthesis of new O-perhalopyridin-4-yl hydroxylamines
as shelf-stable and versatile amidyl-radical precursors. The novel amination reagents can …