Photoredox catalysis harvesting multiple photon or electrochemical energies

M Lepori, S Schmid, JP Barham - Beilstein Journal of Organic …, 2023 - beilstein-journals.org
Photoredox catalysis (PRC) is a cutting-edge frontier for single electron-transfer (SET)
reactions, enabling the generation of reactive intermediates for both oxidative and reductive …

Alkyl radicals from diacyl peroxides: metal-/base-/additive-free photocatalytic alkylation of N-heteroaromatics

F Cheng, L Fan, Q Lv, X Chen, B Yu - Green Chemistry, 2023 - pubs.rsc.org
Alkyl diacyl peroxides were demonstrated to be efficient alkylating reagents for the visible-
light-induced 4CzIPN-catalyzed direct C–H alkylation of N-heteroaromatics. With this metal …

Shining fresh light on complex photoredox mechanisms through isolation of intermediate radical anions

SJ Horsewill, G Hierlmeier, Z Farasat, JP Barham… - ACS …, 2023 - ACS Publications
Photoredox catalysis (PRC) has gained enormous and wide-ranging interest in recent years
but has also been subject to significant mechanistic uncertainty, even controversy. To …

A General Photocatalytic Strategy for Nucleophilic Amination of Primary and Secondary Benzylic C–H Bonds

ME Ruos, RG Kinney, OT Ring… - Journal of the American …, 2023 - ACS Publications
We report a visible-light photoredox-catalyzed method that enables nucleophilic amination
of primary and secondary benzylic C (sp3)–H bonds. A novel amidyl radical precursor and …

Sensitizer-controlled photochemical reactivity via upconversion of red light

F Glaser, OS Wenger - Chemical Science, 2023 - pubs.rsc.org
By combining the energy input from two red photons, chemical reactions that would normally
require blue or ultraviolet irradiation become accessible. Key advantages of this biphotonic …

Electron‐Poor Acridones and Acridiniums as Super Photooxidants in Molecular Photoelectrochemistry by Unusual Mechanisms

J Žurauskas, S Boháčová, S Wu, V Butera… - Angewandte …, 2023 - Wiley Online Library
Electron‐deficient acridones and in situ generated acridinium salts are reported as potent,
closed‐shell photooxidants that undergo surprising mechanisms. When bridging acyclic …

Metal–Organic Bichromophore Lowers the Upconversion Excitation Power Threshold and Promotes UV Photoreactions

H Li, C Wang, F Glaser, N Sinha… - Journal of the American …, 2023 - ACS Publications
Sensitized triplet–triplet annihilation upconversion is a promising strategy to use visible light
for chemical reactions requiring the energy input of UV photons. This strategy avoids unsafe …

Generation of Thioxanthone Hydrogen Anion by Double Photoreduction and Uses for Catalytic Photoreductions

WJ Kang, B Li, Z Zhao, S Sun, C Feng, K Hu… - ACS …, 2023 - ACS Publications
Anions are the reduced form of precatalysts that are a special type of photoredox catalyst,
unlike traditional iridium or ruthenium complexes. Among them, radical anions often have …

Organic super-reducing photocatalysts generate solvated electrons via two consecutive photon induced processes

M Villa, A Fermi, F Calogero, X Wu, A Gualandi… - Chemical …, 2024 - pubs.rsc.org
Photocatalysts with extremely strong reducing potential are often thought to operate through
a consecutive photoinduced electron transfer (ConPeT) mechanism, where a first photon …

Base-mediated homologative rearrangement of nitrogen–oxygen bonds of N-methyl-N-oxyamides

M Malik, R Senatore, T Langer, W Holzer, V Pace - Chemical Science, 2023 - pubs.rsc.org
Due to the well known reactivity of C (O)–N functionalities towards canonical C1-
homologating agents (eg carbenoids, diazomethane, ylides), resulting in the extrusion of the …