Potassium-modified carbon nitride photocatalyzed-aminoacylation of N‑sulfonyl ketimines

Chinese Chemical Letters, Journal Year: 2024, Volume and Issue: 36(2), P. 110250 - 110250

Published: July 17, 2024

Language: Английский

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Insight into stable, concentrated radicals from sulfur-functionalized alkyne-rich crystalline frameworks and application in solar-to-vapor conversion

Chinese Journal of Structural Chemistry, Journal Year: 2024, Volume and Issue: 43(8), P. 100380 - 100380

Published: June 26, 2024

Language: Английский

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Visible Light-Induced Synthesis of Sulfenamides via Oxidative Coupling of Amines with Thiols

Organic Letters, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

Herein, we report a visible light-induced synthesis of sulfenamides via the oxidative coupling amines with thiols using O2 as an oxidant. The photoreaction was conducted under simple and mild conditions, without any photocatalysts, metals, or additives. Detailed mechanistic studies revealed that sulfur radical is generated through single-electron transfer from in situ-generated anion to light irradiation. This intermediate couples form disulfide, which subsequently undergoes aminolysis produce sulfenamides.

Language: Английский

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Photocatalytic C−C bond formation and cleavage reactions based on graphitic carbon nitride semiconductor materials

Tetrahedron, Journal Year: 2025, Volume and Issue: unknown, P. 134651 - 134651

Published: April 1, 2025

Language: Английский

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Photocatalyst‐Free Visible Light‐Induced C(sp²)−H Arylation of Quinoxalin‐2(1H)‐ones and Coumarins

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(44)

Published: June 3, 2024

Herein, we describe a visible light-induced C(sp

Language: Английский

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Visible-Light-Promoted C3-Sulfenylindoles with Arylsulfonyl Chlorides via Electron Donor–Acceptor Complex

The Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: 89(11), P. 7591 - 7597

Published: May 9, 2024

In this study, we present an efficient approach for the synthesis of 3-sulfenyl indoles through electron donor–acceptor (EDA) complex-promoted photoreaction. This sulfenylation reaction leverages sulfonyl chlorides as sulfur source and employs PPh3 reductant without need any transition-metal catalyst or photocatalyst. At same time, relaxation process excited EDA complex was theoretically investigated at method multiconfiguration second-order perturbation//complete active space self-consistent field/PCM level theory, which involves π bond injecting to antibonding orbital S–Cl in arylsulfonyl chlorides.

Language: Английский

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Insight into Stable, Concentrated Radicals: from Sulfur-functionalized Alkyne-rich Crystalline Frameworks to Simple Alkyne Motifs

Published: March 4, 2024

Organic radicals feature versatile unpaired electrons key for photoelectronic and biomedical applications, but remain difficult to access in stable concentrated forms. We disclose easy generation of stable, from various alkynyl phenyl motifs, including 1) sulfur-functionalized alkyne-rich organic linkers crystalline frameworks; 2) the powders these molecules alone; 3) simple diethynylbenzenes. For Zr-based framework, radical-rich framework was achieved by thermal annealing range 300‒450 °C. terminal alkynes, electron paramagnetic resonance signals (EPR; indicative free radicals) arise after air exposure or mild heating (e.g., 70 °C). Further 150 °C 3 hours) raises radical concentrations up 3.30 mol kg‒1. more internal transformations into porous solids can also be triggered, albeit at higher temperatures 250 500 The resulted radical-containing are porous, as well heat (up 300‒500 °C) exhibit photothermal conversion capacity. formation ascribed extensive alkyne cyclizations, forming defects, dangling bonds associated stabilized polycyclic π-systems.

Language: Английский

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Visible Light‐Promoted Mono‐Bromination of Aniline Derivatives and Nitrogen‐Containing Heterocyclic Compounds via Electron Donor−Acceptor Complex

Asian Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: June 11, 2024

Abstract We present a successful development of photo‐induced mono‐bromination method for anilines, which eliminates the requirement photocatalysts and excess bromine sources. Experimental investigations, complemented by computational analyses, establish that this operates via formation an electron donor‐acceptor (EDA) complex. This innovative approach enables synthesis highly regioselective mono‐brominated products across diverse range substrates, all achieved under mild reaction conditions.

Language: Английский

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Reactions of alkynes with C–S bond formation: recent developments

Organic & Biomolecular Chemistry, Journal Year: 2024, Volume and Issue: 22(32), P. 6443 - 6484

Published: Jan. 1, 2024

Alkynes are important in organic synthesis. This review mainly focuses on the recent advances (2013–2023) alkynes with C–S bond formation, based more than 30 kinds of sulfur reagents.

Language: Английский

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Photoelectrocatalytic [4+2] Annulation for S‐Heterocycle Assembly Enabled by Proton‐Coupled Electron Transfer (PCET)

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(59)

Published: Aug. 3, 2024

Abstract Cross‐dehydrogenative couplings (CDC) present an efficient strategy for the assembly of biorelevant heterocycles, but are thus far largely limited to toxic transition metals and rather harsh reaction conditions. In sharp contrast, we, herein report on a mild photoelectrocatalyzed CDC‐[4+2] annulation enabling synthesis functionalized isothiochromenes enabled by proton‐coupled electron transfer (PCET) strategy. The transformative photoelectrocatalysis obviated transition‐metal, high temperatures, stoichiometric chemical redox reagents. This approach was characterized exceedingly conditions, ample substrate scope, commercially available catalyst. Gram‐scale reactions telescoped route reflected unique potential in green important S ‐heterocycles.

Language: Английский

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