Synthesis of unsymmetrical ketones by applying visible-light benzophenone/nickel dual catalysis for direct benzylic acylation

2020 ◽  
Vol 56 (45) ◽  
pp. 6082-6085 ◽  
Author(s):  
Patricia E. Krach ◽  
Abhishek Dewanji ◽  
Tingting Yuan ◽  
Magnus Rueping
Keyword(s):  
Visible Light ◽  
Acid Chlorides ◽  
Robust Method ◽  
Photochemical Reactivity ◽  
Dual Catalysis

The photochemical reactivity of benzophenone is utilized for direct benzylic C–H bond acylation of methylbenzenes via H-atom abstraction as a key step. The reaction offers a robust method for synthesizing ketones using acid chlorides and anhydrides.

Accessing Aliphatic Amines in C–C Cross-Couplings by Visible Light/Nickel Dual Catalysis

2021 ◽  
Author(s):  
Weizhe Dong ◽  
Shorouk O. Badir ◽  
Xuange Zhang ◽  
Gary A. Molander
Keyword(s):  
Visible Light ◽  
Aliphatic Amines ◽  
Dual Catalysis

Photoredox/Cobalt Dual Catalysis for Visible-Light-Mediated Alkene–Alkyne Coupling

2019 ◽  
Vol 21 (10) ◽  
pp. 3755-3759 ◽  
Author(s):  
Pramod Rai ◽  
Kakoli Maji ◽  
Biplab Maji
Keyword(s):  
Visible Light ◽  
Dual Catalysis ◽  
Alkyne Coupling

scholarly journals Photoredox mediated nickel catalyzed C(sp3)–H thiocarbonylation of ethers

2017 ◽  
Vol 8 (9) ◽  
pp. 6613-6618 ◽  
Author(s):  
Byungjoon Kang ◽  
Soon Hyeok Hong
Keyword(s):  
Visible Light ◽  
Dual Catalysis

The first C(sp3)–H thiocarbonylation is achieved by visible light photoredox/Ni dual catalysis using thiobenzoates as the thioester group source.

scholarly journals Lanthanide Luminescence in Visible-Light-Promoted Photochemical Reactions

Molecules ◽  
2020 ◽  
Vol 25 (17) ◽  
pp. 3892
Author(s):  
Ramiro Barraza ◽  
Matthew Allen
Keyword(s):  
Coordination Chemistry ◽  
Visible Light ◽  
Ground States ◽  
Photochemical Reactions ◽  
Photochemical Reactivity ◽  
Lanthanide Luminescence ◽  
Electrochemical Potentials

The excitation of lanthanides with visible light to promote photochemical reactions has garnered interest in recent years. Lanthanides serve as initiators for photochemical reactions because they exhibit visible-light-promoted 4f→5d transitions that lead to emissive states with electrochemical potentials that are more negative than the corresponding ground states. The lanthanides that have shown the most promising characteristics for visible-light promoted photoredox are SmII, EuII, and CeIII. By understanding the effects that ligands have on the 5d orbitals of SmII, EuII, and CeIII, luminescence and reactivity can be rationally modulated using coordination chemistry. This review briefly overviews the photochemical reactivity of SmII, EuII, and CeIII with visible light; the properties that influence the reactivity of these ions; and the research that has been reported towards modulating their photochemical-relevant properties using visible light and coordination chemistry.

Visible-Light-Driven Alkyne Hydro-/Carbocarboxylation Using CO2 via Iridium/Cobalt Dual Catalysis for Divergent Heterocycle Synthesis

2018 ◽  
Vol 140 (15) ◽  
pp. 5257-5263 ◽  
Author(s):  
Jing Hou ◽  
Aloysius Ee ◽  
Wei Feng ◽  
Jin-Hui Xu ◽  
Yu Zhao ◽  
...  
Keyword(s):  
Visible Light ◽  
Heterocycle Synthesis ◽  
Visible Light Driven ◽  
Dual Catalysis

scholarly journals Visible-Light Photoredox and Palladium Dual Catalysis in Organic Synthesis

2020 ◽  
Vol 40 (11) ◽  
pp. 3697
Author(s):  
Wenjun Zhou ◽  
Yuanxu Jiang ◽  
Liang Chen ◽  
Kaixing Liu ◽  
Dagang Yu
Keyword(s):  
Visible Light ◽  
Organic Synthesis ◽  
Dual Catalysis

scholarly journals Relay Dual Catalysis: Photoredox and NHC-Catalyzed Cross-Double C-H Functionalizations of Aldehydes and Alkenes

2021 ◽  
Author(s):  
MIng-Shang Liu ◽  
Lin Min ◽  
Bi-Hong Chen ◽  
Wei Shu
Keyword(s):  
Visible Light ◽  
Electron Acceptor ◽  
Direct Coupling ◽  
Coupling Mechanism ◽  
Forming Process ◽  
Radical Coupling ◽  
Dehydrogenative Coupling ◽  
Dual Catalysis

Direct functionalizations of two distinct inert C-H bonds represent the most ideal ways to construct C-C bonds. Herein, we report an intermolecular vinylation of aldehydes using alkenes as the vinylating reagents through sequential two-fold C-H functionalizations. The merging of visible light and NHC-catalysis allows for the direct coupling of alkenes with aldehydes through an unprecedented relay dual catalysis enabled cross-dehydrogenative coupling mechanism. The use of diphenoquinone is essential for the success of this reaction, which plays an intriguing two-fold role in the reaction, as both an electron acceptor as well as a radical reservoir for the radical coupling enabling C-C forming-process.

Sign in / Sign up

Export Citation Format

Share Document