Results 51 to 60 of about 482,822 (233)
Dicyanopyrazine: 10th Anniversary in Photoredox Catalysis. [PDF]
Chem RecThe last decade unveiled dicyanopyrazine as a purely organic photocatalyst capable of initiating a variety of unprecedented photoredox transformations. The latest discoveries also pointed to a facile Mallory‐type photocyclization of the catalyst to quinoxaline‐2,3‐dicarbonitrile derivative, which proved to be the active catalytic species. Its principal
Burešová Z, Bureš F.
europepmc +4 more sources
Nature Communications, 2023 Herein, we report a mild, operationally simple, multicatalytic method for the synthesis of β,γ-unsaturated ketones via allylic acylation of alkenes. Specifically, the method combines N‑heterocyclic carbene catalysis, hydrogen atom transfer catalysis, and
Xiao-Chen Wang +6 more
semanticscholar +1 more source
Photoredox catalysis harnessing oxygen-centered radicals [PDF]
, 2020 Visible light provides an abundant and renewable source of energy with an ample capacity to mediate chemical transformations. Photoredox catalysis utilizes this energy for the generation of high-energy radical intermediates and strategically employs ...
Ondrejková, Alica +8 more
core +1 more source
Chemical Reviews, 2021 Redox processes are at the heart of synthetic methods that rely on either electrochemistry or photoredox catalysis, but how do electrochemistry and photoredox catalysis compare? Both approaches provide access to high energy intermediates (e.g.
Nicholas E. S. Tay +2 more
semanticscholar +1 more source
An anion-binding approach to enantioselective photoredox catalysis. [PDF]
SciencePhotoredox catalysis has emerged as a transformative strategy in synthetic chemistry, enabling a wide variety of valuable chemical reactions through generation of highly reactive radical ion intermediates. Pairing chiral counteranions with cation radical intermediates provides a potentially generalizable tool for controlling absolute stereochemistry in
Vojáčková P, Jacobsen EN.
europepmc +3 more sources
Visible-Light Photoredox Catalysis in Water
The Journal of Organic Chemistry, 2022 The use of water in organic synthesis draws attention to its green chemistry features and its unique ability to unveil unconventional reactivities. Herein, literature about the use of water as a reaction medium under visible-light photocatalytic conditions is summarized in order to highlight challenges and opportunities.
Camilla Russo +3 more
openaire +4 more sources
Single-molecule photoredox catalysis
Chemical Science, 2019 Photocatalytic dehalogenation by a common dyestuff under aqueous conditions is driven by energy-additive absorption of two photons on the single-molecule level.
Josef Haimerl +4 more
openaire +3 more sources
Photo-induced oxidant-free oxidative C–H/N–H cross-coupling between arenes and azoles
Nature Communications, 2017 Functionalization of unactivated C–H bonds is an attractive strategy to introduce functionality without the need for pre-functionalized starting materials.
Linbin Niu +5 more
doaj +1 more source
Developing Organometallic Nucleophilic Reagents Via Photoredox Catalysis [PDF]
, 2023 The addition of organometallic reagents to the carbonyl group represents a key transformation, both in academia and industry. Most of these transformations rely on a mechanism in which accessible and reactive halides are transformed into the ...
Cozzi P. G. +4 more
core +1 more source
Nature Communications, 2023 The stereoselective synthesis of 1,3-dienes represents a challenge in organic synthesis. Here, the authors report a ligand-controlled stereodivergent access to both Z- and E-sulfonyl-1,3-dienes via photoredox and nickel catalysis.
Tianyu Long +6 more
doaj +1 more source