Carbazole-based photocatalyst (4CzIPN) for novel donor–acceptor (D–A) fluorophore-catalyzed visible-light-induced photosynthesis of 3,4-dihydropyrimidin-2-(1H)-ones/thiones via a proton-coupled electron transfer (PCET) process

RSC Advances, Journal Year: 2023, Volume and Issue: 13(4), P. 2514 - 2522

Published: Jan. 1, 2023

Based on the Biginelli reaction of β-ketoesters, arylaldehydes, and urea/thiourea, we created a green radical synthesis procedure for 3,4-dihydropyrimidin-2-(1H)-ones/thiones. A PCET (proton-coupled electron transfer) photocatalyst was used in an ethanol solution air environment at room temperature visible light to provide renewable energy source. In this study, seek create novel donor-acceptor (D-A) fluorophore that is affordable widely available. The carbazole-based (4CzIPN), addition its time-saving capabilities simplicity use, exhibits excellent yields, energy-efficient, ecologically friendly. This makes it possible track evolution environmental chemical factors throughout time. To determine turnover number (TON) frequency (TOF) 3,4-dihydropyrimidin-2-(1H)-ones/thiones, study done. Gram-scale cyclization demonstrates may be industry effectively.

Language: Английский

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Visible‐Light‐Driven Cyclizations

Advanced Synthesis & Catalysis, Journal Year: 2024, Volume and Issue: 366(4), P. 635 - 697

Published: Jan. 13, 2024

Abstract In recent years, the interest to develop cyclizations promoted by visible light has been gaining a lot of attention due its sustainability aspect. this review, we summarize most important advances in period describing methods used generate different ring sizes, while focusing on mechanistic details these reactions.

Language: Английский

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Acridine yellow G as a photo-induced electron transfer catalyzed radical metal-free synthesis of tetrahydrobenzo[b]pyran scaffolds in an aqueous media

Current Research in Green and Sustainable Chemistry, Journal Year: 2023, Volume and Issue: 6, P. 100356 - 100356

Published: Jan. 1, 2023

We established a green approach for the radical synthesis of tetrahydrobenzo[b]pyran scaffolds by using Knoevenagel-Michael tandem cyclocondensation aldehyde derivatives, malononitrile, and dimedone. Using visible light as renewable energy source, photo-induced electron transfer (PET) photocatalyst was exploited in an aqueous solution. A low-cost, readily available non-metal dye is goal this research. The photochemically catalyzed acridine yellow G (AYG) exhibits high yields, efficiency, environmental friendliness, well speed-saving characteristics ease use. This allows tracking chemical variables over time. In study, turnover number (TON) frequency (TOF) were determined. It remarkable that gram-scale cyclization feasible, indicating it can be applied to industry.

Language: Английский

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3DPAFIPN as a halogenated dicyanobenzene-based photosensitizer catalyzed gram-scale photosynthesis of pyrano[2,3-d]pyrimidine scaffolds

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Aug. 12, 2023

Abstract Utilizing the Knoevenagel–Michael tandem cyclocondensation reaction of barbituric acid/1,3-dimethylbarbituric acid, malononitrile, and aryl aldehydes, a sustainable methodology for photosynthesis pyrano[2,3- d ]pyrimidine scaffolds has been devised. The present study expounds on development green radical synthetic approach toward this class compounds. In study, novel halogenated dicyanobenzene-based photosensitizer was utilized in an aqueous solution, exposed to air at room temperature, activated by blue LED as renewable energy source purpose generating energy. primary aim endeavor is employ recently developed, easily obtainable, affordably priced cyanoarene-based donor–acceptor (D–A). 3DPAFIPN [2,4,6-tris(diphenylamino)-5-fluoroisophthalonitrile]} photocatalyst, thermally delayed fluorescence (TADF), capable inducing single electron transfer (SET) upon irradiation with visible light, thereby offering facile efficient high degree effectiveness, efficiency, eco-friendliness. aforementioned phenomenon facilitates exploration temporal changes that have occurred interactions between surroundings chemical constituents. aimed investigate turnover number (TON) frequency (TOF) scaffolds. Additionally, it demonstrated gram-scale cyclization viable method utilization industrial applications.

Language: Английский

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Recyclable photocatalyst perovskite as a single-electron redox mediator for visible-light-driven photocatalysis gram-scale synthesis of 3,4-dihydropyrimidin-2-(1H)-ones/thiones in air atmosphere

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: June 24, 2023

Based on the Biginelli reaction of β-ketoesters, arylaldehydes, and urea/thiourea, we created a green radical synthesis procedure for 3,4-dihydropyrimidin-2-(1H)-ones/thiones. A single-electron redox mediator was applied to solution ethanol in an air environment, at room temperature, with blue LEDs as renewable energy source order create. The objective this research is create halide perovskite that widely available, affordable, recyclable, economically feasible. factor mentioned discussion tolerates variety donating withdrawing functional groups while still offering very fast rate excellent yields. range yields quite uniform (86-94%, average: 90.4%), times quick (4-8 min, 5.8 min). Furthermore, gram-scale cyclization shows it applicable use industry. Additionally, CsPbBr3 stable can be used six row without experiencing significant structural changes or activity loss, which has been extremely helpful meeting industrial needs environmental issues.

Language: Английский

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Carbazole-based photocatalyst (4CzIPN) as a novel donor-acceptor (D-A) fluorophore catalyzed gram-scale 2-amino-4H-chromene scaffolds photosynthesis via a proton-coupled electron transfer (PCET) process

Journal of the Taiwan Institute of Chemical Engineers, Journal Year: 2023, Volume and Issue: 144, P. 104699 - 104699

Published: Feb. 11, 2023

Language: Английский

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Proflavine (PFH+): as a photosensitizer (PS) biocatalyst for the visible-light-induced synthesis of pyrano [2,3-d] pyrimidine scaffolds

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

Published: March 26, 2024

A sustainable methodology for the synthesis of pyrano [2,3- d ] pyrimidine scaffolds have been developed, employing Knoevenagel-Michael tandem cyclocondensation reaction barbituric acid/1,3-dimethylbarbituric acid, malononitrile, and aryl aldehydes. This study elucidates advancement a environmentally conscious approach to synthesizing this category chemical compounds. In present investigation, novel photosensitizer comprising proflavine (PFH + ) bio-photocatalyst was employed in an aqueous medium, subjected air atmosphere at room temperature, stimulated by blue-light-emitting diode (LED) harness renewable energy. The fundamental objective initiative is utilize (PS) biocatalyst that has recently can be conveniently acquired, priced affordably. photocatalyst, demonstrates ability initiate photoinduced-electron transfer (PET) through exposure visible light. property endows photocatalyst with practical efficient method achieving high effectiveness, energy efficiency, friendly outcomes. current research endeavor examining turnover number (TON) frequency (TOF) pertaining scaffolds. Moreover, it validated cyclization gram-scale feasible various industrial settings.

Language: Английский

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Magnetic BiFeO3 nanoparticles: a robust and efficient nanocatalyst for the green one-pot three-component synthesis of highly substituted 3,4-dihydropyrimidine-2(1H)-one/thione derivatives

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Sept. 27, 2024

Language: Английский

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Carbazole-based photocatalyst (4CzIPN) as a novel donor-acceptor fluorophore-catalyzed visible-light-induced photosynthesis of dihydropyrano[2,3-c]pyrazole scaffolds via a proton-coupled electron transfer process

Journal of Chemical Sciences, Journal Year: 2023, Volume and Issue: 135(3)

Published: July 25, 2023

Language: Английский

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Acridine Yellow G-catalyzed Visible-Light-Promoted Synthesis of 2-amino-4 H-chromene Scaffolds via a Photo-Induced Electron Transfer Process in an Aqueous Media

Catalysis Surveys from Asia, Journal Year: 2023, Volume and Issue: 27(3), P. 306 - 317

Published: May 13, 2023

Language: Английский

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