Direct photocatalyzed hydrogen atom transfer (HAT) for aliphatic C–H bonds elaboration

L Capaldo, D Ravelli, M Fagnoni - Chemical Reviews, 2021 - ACS Publications
Direct photocatalyzed hydrogen atom transfer (d-HAT) can be considered a method of
choice for the elaboration of aliphatic C–H bonds. In this manifold, a photocatalyst (PCHAT) …

Enantioselective, Intermolecular [π2+σ2] Photocycloaddition Reactions of 2(1H)-Quinolones and Bicyclo[1.1.0]butanes

M de Robichon, T Kratz, F Beyer, J Zuber… - Journal of the …, 2023 - ACS Publications
1-Substituted bicyclo [1.1. 0] butanes add enantioselectively to 2 (1 H)-quinolones upon
irradiation (λ= 366 nm) in the presence of a chiral complexing agent. A two-point hydrogen …

Bicyclo [2.1. 1] hexanes by visible light-driven intramolecular crossed [2+ 2] photocycloadditions

T Rigotti, T Bach - Organic Letters, 2022 - ACS Publications
Bicyclo [2.1. 1] hexanes have become increasingly popular building blocks in medicinal
chemistry as bridged scaffolds that provide unexplored chemical space. We herein report a …

Rational design of triplet sensitizers for the transfer of excited state photochemistry from UV to visible

LD Elliott, S Kayal, MW George… - Journal of the …, 2020 - ACS Publications
Time Dependent Density Functional Theory has been used to assist the design and
synthesis of a series thioxanthone triplet sensitizers. Calculated energies of the triplet …

Recent Advances in Dual Triplet Ketone/Transition-Metal Catalysis

V Iziumchenko, V Gevorgyan - Synlett, 2023 - thieme-connect.com
Dual light-excited ketone/transition-metal catalysis is a rapidly developing field of
photochemistry. It allows for versatile functionalizations of C–H or C–X bonds enabled by …

Photochemical deracemization of primary allene amides by triplet energy transfer: a combined synthetic and theoretical study

M Plaza, J Großkopf, S Breitenlechner… - Journal of the …, 2021 - ACS Publications
The photochemical deracemization of 2, 4-disubstituted 2, 3-butadienamides (allene
amides) was investigated both experimentally and theoretically. The reaction was catalyzed …

Synthesis and properties of novel bis-chalcone-based photoinitiators for LED polymerization with photobleaching and low migration

L Deng, J Qu - Progress in Organic Coatings, 2023 - Elsevier
In this work, six bis-chalcone-based photoinitiators (1E, 4E)-1, 5-diphenylpenta-1, 4-dien-3-
one (DKE-1),(1E, 4E)-1, 5-di (naphthalen-2-yl) penta-1, 4-dien-3-one (DKE-2),(1E, 4E)-1, 5 …

Visible Light‐Mediated Dearomative Hydrogen Atom Abstraction/Cyclization Cascade of Indoles

Y Xiong, J Großkopf, C Jandl… - Angewandte Chemie …, 2022 - Wiley Online Library
The photochemical synthesis of yet unknown 2‐oxospiro [azetidine‐3, 3′‐indolines](17
examples, 80–95% yield), 2, 4‐dioxospiro [azetidine‐3, 3′‐indolines](eight examples, 87 …

Dearomative cycloadditions utilizing an organic photosensitizer: an alternative to iridium catalysis

AB Rolka, B Koenig - Organic Letters, 2020 - ACS Publications
A highly efficient, cheap, and organic alternative to the commonly used iridium
photosensitizer (Ir [dF (CF3) ppy] 2 (dtbpy)) PF6 ([Ir–F]) is presented for visible-light energy …

Enantioselective Visible‐Light‐Mediated Formation of 3‐Cyclopropylquinolones by Triplet‐Sensitized Deracemization

A Tröster, A Bauer, C Jandl… - Angewandte Chemie …, 2019 - Wiley Online Library
Allyl‐substituted quinolones undergo a triplet‐sensitized di‐π‐methane rearrangement
reaction to the corresponding 3‐cyclopropylquinolones upon irradiation with visible light (λ …