Kinetics and Catalysis, Год журнала: 2023, Номер 64(6), С. 909 - 921
Опубликована: Дек. 1, 2023
Язык: Английский
Catalysts, Год журнала: 2023, Номер 13(2), С. 220 - 220
Опубликована: Янв. 18, 2023
Oxygen atom incorporation into organic molecules is one of the most powerful strategies to increase their pharmacological activity and obtain valuable intermediates in synthesis. Traditional oxidizing agents perform very well, but environmental impact low selectivity constitute significant limitations. On contrary, visible-light-promoted oxygenations represent a sustainable method for compounds, since only molecular oxygen photocatalyst are required. Therefore, photocatalytic oxygenation reactions exhibit high atom-economy eco-compatibility. This mini-review collects analyzes recent literature on organo-photocatalysis applications promote selective substrates. In particular, acridinium salts, Eosin Y, Rose Bengal, cyano-arenes, flavinium quinone-based dyes widely used as photocatalysts several transformations alkanes, alkenes, alkynes, aromatic amines, phosphines, silanes, thioethers. this context, organo-photocatalysts proved be highly efficient catalytic terms, showing similar or even superior performances with respect metal-based counterparts, while maintaining impact. addition, given mild reaction conditions, photo-oxygenation processes often display remarkable selectivity, which striking feature late-stage functionalization complex molecules.
Язык: Английский
Процитировано
24
ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(5), С. 6008 - 6024
Опубликована: Янв. 29, 2024
The synthesis of low-temperature poly(heptazine imide) (PHI) presents a significant challenge. In this context, we have developed novel strategy for PHI in work. This involves the introduction Na+ ions, which etch and disrupt conjugated structure carbon nitride (CN) during assisted thermal condensation. disruption leads to partial decomposition heptazine ring structure, resulting formation C≡N functionalities on CN surface, are enriched with hydroxyl groups undergo cyano modification. heterojunctions between ZnO, facilitate charge transfer along an immobilization pathway, accelerated processes improved reactant adsorption as well electron utilization efficiency. catalyst was employed room temperature, atmospheric pressure, solvent-free photocatalytic selective oxidation cumene (CM), achieving conversion rate 28.7% remarkable selectivity 92.0% toward desired product, hydroperoxide (CHP). Furthermore, CHP induced oxidative reactions, demonstrated by successful benzylamine imine sulfide sulfoxide, both yielding high product yields. Additionally, continuous-flow device significantly reduces reaction time required these processes. work not only introduces innovative approach environmentally friendly, sustainable, clean, efficient but also underscores promising potential advantages nitride-based photocatalysts realm sustainable green organic transformations.
Язык: Английский
Процитировано
5
Journal of the Taiwan Institute of Chemical Engineers, Год журнала: 2024, Номер 164, С. 105680 - 105680
Опубликована: Июль 27, 2024
Язык: Английский
Процитировано
5
Chemistry - A European Journal, Год журнала: 2023, Номер 30(12)
Опубликована: Ноя. 30, 2023
Abstract The design and synthesis of metal‐organic frameworks (MOFs) as photocatalytic molecular reactors for varied reactions have drawn great attention. In this work, we designed a novel photoactive perylenediimides‐based (PDI) carboxylate ligand N,N’‐di(3’,3”,5’,5”‐tetrakis(4‐carboxyphenyl))‐1,2,6,7‐tetrachloroperylene‐3,4,9,10‐tetracarboxylic acid diimide (Cl‐PDI‐TA) use it to successfully synthesize Zr(IV)‐based MOF 1 constructed from [Zr 6 O 8 (H 2 O) ] 8+ clusters bridged by Cl‐PDI‐TA ligands. Structural analysis revealed that Zr‐MOF manifests 3D framework with (4,8)‐connected csq topology possesses triangular channels ~17 Å mesoporous hexagonal ~26 along c ‐axis. Moreover, the synthesized exhibits visible‐light absorption efficient photoinduced free radical generation property, making promising reactor. When was used photocatalyst aerobic oxidation sulfides under irradiation visible light, could afford corresponding sulfoxides high yield selectivity. Experimental results demonstrated substrate be fixed in pores directly transformed products solid state. Furthermore, mechanism transformation also investigated singlet oxygen ( ) superoxide (O ⋅ − generated energy transfer electron photoexcited oxidants were main active species catalytic reactions. This work offers perceptive comprehension PDI‐based MOFs further study on
Язык: Английский
Процитировано
10
Coordination Chemistry Reviews, Год журнала: 2024, Номер 512, С. 215898 - 215898
Опубликована: Апрель 28, 2024
Язык: Английский
Процитировано
3
Langmuir, Год журнала: 2025, Номер unknown
Опубликована: Апрель 16, 2025
This study presents a novel, eco-friendly, and cost-effective magnetic hybrid photocatalyst, Fe3O4@SiO2/L-tryptophan, synthesized through scalable three-step green approach using natural agricultural waste. The Fe3O4@SiO2/L-tryptophan nanoparticle features core-shell structure with high surface area (63.14 m2/g), strong visible-light absorption (λ > 448 nm), narrow band gap (1.84 eV), superparamagnetic properties (22 emu/g), enabling efficient separation reusability. Characterization techniques (XRD, XPS, FT-IR, FE-SEM, HR-TEM, UV-vis DRS, TGA, BET, EIS) confirmed its structural stability, charge separation, interfacial transport. photocatalyst achieved 82.1% oxidative desulfurization of dibenzothiophene (DBT) conversion rates for toluene (85%) styrene (90%) under visible light O2 as an oxidant. It retained over 85% activity after five cycles, demonstrating excellent durability. For the first time, all components are derived from sources: Fe3O4 sorghum seed extract, SiO2 rice husk, L-tryptophan enhanced separation. sustainable synthesis reduces chemical waste energy consumption, setting new benchmark environmentally friendly photocatalysts.
Язык: Английский
Процитировано
0
International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 144119 - 144119
Опубликована: Май 1, 2025
Язык: Английский
Процитировано
0
Chemical Science, Год журнала: 2023, Номер 14(36), С. 9943 - 9950
Опубликована: Янв. 1, 2023
An artificial light-harvesting system constructed by a water-soluble host–guest complex can be regarded as high-level conceptual model of its biological counterpart and convert solar energy into chemical in an aqueous environment.
Язык: Английский
Процитировано
8
Molecules, Год журнала: 2023, Номер 28(15), С. 5635 - 5635
Опубликована: Июль 25, 2023
Organic thioethers play an important role in the discovery of drugs and natural products. However, green synthesis organic sulfide compounds remains a challenging task. The convenient efficient 5-alkoxy-3-halo-4-methylthio-2(5H)-furanones from DMSO is performed via mediation 1,3-dibromo-5,5-dimethylhydantoin (DBDMH), affording facile route for sulfur-functionalization 3,4-dihalo-2(5H)-furanones under transition metal-free conditions. This new approach has demonstrated functionalization non-aromatic Csp2-X-type halides with unique structures containing C-X, C-O, C=O C=C bonds. Compared traditional methods using metal catalysts ligands, this reaction many advantages, such as lower temperature, shorter time, wide substrate range good functional group tolerance. Notably, plays multiple roles, simultaneously used odorless methylthiolating reagent safe solvent.
Язык: Английский
Процитировано
6
The Journal of Organic Chemistry, Год журнала: 2023, Номер 88(21), С. 15288 - 15297
Опубликована: Окт. 23, 2023
An efficient strategy for the synthesis of 3-arylthiobenzo[b]thiophenes via a photodriven radical cyclization 2-alkynylthioanisoles with disulfide was developed. The reaction proceeded smoothly under visible-light irradiation without any external photocatalyst and generated desired products in high yields good functional group tolerance.
Язык: Английский
Процитировано
6