Copper nanoclusters: emerging photoredox catalysts for organic bond formations DOI Creative Commons
Arunachalam Sagadevan, Kathiravan Murugesan, Osman M. Bakr

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(94), P. 13858 - 13866

Published: Jan. 1, 2024

Advancements in fine chemical synthesis and drug discovery continuously demand the development of new more efficient catalytic systems. In this regard, numerous transition metal-based catalysts have been developed successfully applied industrial processes. However, need for innovative catalyst systems to further enhance efficiency transformations applications persists. Metal nanoclusters (NCs) represent a distinct class ultra-small nanoparticles (<3 nm) characterized by precise number metal atoms coordinated with defined ligands. This structure confers abundant unsaturated active sites unique electronic optical properties, setting them apart from conventional or bulk metals. The well-defined monodisperse nature NCs make particularly attractive applications. Among these, copper-based emerged as versatile sustainable challenging organic bond-forming reactions. Their including natural abundance, accessible oxidation states, diverse ligand architectures, strong photophysical characteristics, contribute their growing prominence field. review, we discuss photocatalytic activities Cu-based nanoclusters, focusing on cross-coupling reactions (C-C C-N), click reactions, multicomponent couplings,

Language: Английский

Visible-light or sunlight photoredox-catalyzed β-selective acylation of alkenes to access α, β-unsaturated ketones DOI

Xun Yang,

Yuxuan Xiao, Ying Yin

et al.

Organic Chemistry Frontiers, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A general method for accessing α,β-unsaturated ketones through visible-light or sunlight photoredox-catalyzed β-selective acylation of alkenes has been developed.

Language: Английский

Citations

0
Heteroleptic Copper(I) Complexes with Pyridine-Benzothiazole Ligands as Photocatalysts for Free Radical Photopolymerization and 3D Printing DOI
Naralyne M. Pesqueira,

Fabrice Morlet‐Savary,

Michael Schmitt

et al.

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

Copper(I) complexes have attracted considerable attention as efficient redox photocatalysts (PCs) in photopolymerization. In this study, two copper(I) bearing a pyridine-benzothiazole ligand were thoroughly investigated for the free radical photopolymerization of ethoxylated trimethylolpropane triacrylate under violet and green light irradiation. A three-component system comprising copper complex, di-tert-butyl-diphenyl iodonium hexafluorophosphate, ethyl dimethylaminobenzoate additives was various conditions. The exhibited remarkable photoinitiation capabilities, achieving high monomer conversion rates highlighting significant structure–reactivity relationships. Based on energy calculations spectroscopic analyses, mechanistic pathway proposed. optimal conditions successfully applied 3D printing, producing smooth uniform structures.

Language: Английский

Citations

0
Copper(I) Photoredox Catalysts Bearing Tetradentate Phenanthroline-Based Ligands: Understanding the Interplay between Structure and Function DOI
Angus Olding, Lee Cameron, Le Nhan Pham

et al.

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 3731 - 3740

Published: Feb. 17, 2025

Language: Английский

Citations

0
Synthesis of Alkyl Bis(trifluoromethyl)carbinols via Fe-LMCT-Enabled Hydrobis(trifluoromethyl)carbinolation of Alkenes DOI

Huaixuan Guo,

Wing‐Yan Lai,

Jie Ni

et al.

Organic Letters, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 30, 2024

Bis(trifluoromethyl)carbinols are valuable pharmacophores, yet their synthesis is challenging, largely due to a scarcity of safe and effective bis(trifluoromethyl)carbinolation reagents. Here, we realized the hydrobis(trifluoromethyl)carbinolation alkenes, utilizing stable readily accessible 2,2-bis(trifluoromethyl)glycolic acid as source both bis(trifluoromethyl)carbinol unit hydrogen atom. This process leverages photoinduced Fe-LMCT-enabled radical decarboxylation that generates key intermediate. Our mild protocol facilitates diverse range alkyl bis(trifluoromethyl)carbinols, including structurally complex molecules with pharmaceutical relevance.

Language: Английский

Citations

2
Visible light-driven excited-state copper-BINAP catalysis for accessing diverse chemical reactions DOI
Upasana Mukherjee, Jagrut Shah, Ming‐Yu Ngai

et al.

Chem Catalysis, Journal Year: 2024, Volume and Issue: 4(11), P. 101184 - 101184

Published: Nov. 1, 2024

Language: Английский

Citations

2
Innovative cyclic voltammetric analysis of copper(II)-ligand interactions: Urea and saccharin complexes for enhanced redox control DOI

Saiful Islam,

Nidhi Asthana, Md. Jahidul Islam

et al.

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1325, P. 140893 - 140893

Published: Dec. 9, 2024

Language: Английский

Citations

2
Photocatalytic fluoroalkylation by ligand-to-metal charge transfer DOI Creative Commons
Jingyi Liu,

Zhenwei Cui,

Jingjing Bi

et al.

Frontiers in Chemistry, Journal Year: 2024, Volume and Issue: 12

Published: Sept. 6, 2024

Trifluoromethyl (CF

Language: Английский

Citations

0
Dual Copper Photoredox C–H Alkynylation with Arylacetylenes DOI
Akshay M. Nair, Rajjakfur Rahaman, Jatin Patra

et al.

Organic Letters, Journal Year: 2024, Volume and Issue: 26(37), P. 7822 - 7827

Published: Sept. 10, 2024

In the realm of organic synthesis, direct C-H alkynylation with arylacetylenes has remained a daunting challenge due to competing annulations or alkenylation. Addressing this long-standing issue, herein we demonstrate merging copper and photocatalysis achieve elusive benzamides using arylpropiolic acids. Unlike conventional copper-mediated activations, our protocol circumvents need for high temperatures stoichiometric amounts salts metal/non-metal oxidants. The versatility developed dual photoredox system is underscored by performing other diverse functionalizations such as amination, selenylation, arylation, sulfonylation, nitration under slightly modified conditions.

Language: Английский

Citations

0
Copper nanoclusters: emerging photoredox catalysts for organic bond formations DOI Creative Commons
Arunachalam Sagadevan, Kathiravan Murugesan, Osman M. Bakr

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(94), P. 13858 - 13866

Published: Jan. 1, 2024

Advancements in fine chemical synthesis and drug discovery continuously demand the development of new more efficient catalytic systems. In this regard, numerous transition metal-based catalysts have been developed successfully applied industrial processes. However, need for innovative catalyst systems to further enhance efficiency transformations applications persists. Metal nanoclusters (NCs) represent a distinct class ultra-small nanoparticles (<3 nm) characterized by precise number metal atoms coordinated with defined ligands. This structure confers abundant unsaturated active sites unique electronic optical properties, setting them apart from conventional or bulk metals. The well-defined monodisperse nature NCs make particularly attractive applications. Among these, copper-based emerged as versatile sustainable challenging organic bond-forming reactions. Their including natural abundance, accessible oxidation states, diverse ligand architectures, strong photophysical characteristics, contribute their growing prominence field. review, we discuss photocatalytic activities Cu-based nanoclusters, focusing on cross-coupling reactions (C-C C-N), click reactions, multicomponent couplings,

Language: Английский

Citations

0