Electrophilic Halospirocyclization of N-Benzylacrylamides to Access 4-Halomethyl-2-azaspiro[4.5]decanes

The Journal of Organic Chemistry, Год журнала: 2023, Номер 88(19), С. 13610 - 13621

Опубликована: Сен. 11, 2023

An electrophilic spirocyclization of N-benzylacrylamides with N-halosuccinimides (NXS) as the halogenating reagents has been developed. This reaction is carried out at room temperature under simple conditions without relying on metal reagents, photochemistry, or electrochemistry, providing a fast and efficient route to synthesize wide variety 4-halomethyl-2-azaspiro[4.5]decanes satisfactory yields. The approach further highlighted through gram-scale synthesis diverse transformations spiro products.

Язык: Английский

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Seminormal-BrCH₂CH₂OH-mediated electrochemical epoxidation of unactivated olefins

Green Chemistry, Год журнала: 2024, Номер 26(4), С. 2157 - 2161

Опубликована: Янв. 1, 2024

An electrochemical epoxidation of unactivated olefins with water as the source oxygen has been developed.

Язык: Английский

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Chloride‐Promoted Photoelectrochemical C—H Silylation of Heteroarenes^†

Chinese Journal of Chemistry, Год журнала: 2023, Номер 41(22), С. 2963 - 2968

Опубликована: Июнь 24, 2023

Comprehensive Summary A photoelectrochemical approach for the C—H silylation of heteroarenes through dehydrogenation cross‐coupling with H 2 evolution has been developed. The depends on hydrogen atom transfer (HAT) from silanes to Cl‐radical generated light‐induced homolytic cleavage Cl , in which was produced by electrochemical oxidation chloride. large number silylated heterocyclic molecules are rapidly constructed satisfactory yields without relying oxidants and metal reagents.

Язык: Английский

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A Regression Analysis on Steam Gasification of Polyvinyl Chloride Waste for an Efficient and Environmentally Sustainable Process

Polymers, Год журнала: 2023, Номер 15(13), С. 2767 - 2767

Опубликована: Июнь 21, 2023

Over the last few years, researchers have shown a growing interest in polyvinyl chloride (PVC) gasification and conducted several studies to evaluate enhance process. These recognized that processing parameters crucial impact on assessment of PVC gasification. Despite this, there has been limited exploration use machine learning techniques, particularly regression models, optimize waste This study aims investigate effectiveness models as algorithms predicting performance The uses data collected through validated thermodynamic model, three different are tested compared detail. Cold gas efficiency normalized carbon dioxide emission predicted using linear, quadratic, quadratic with interaction algorithms. outcomes for reveal linear algorithm possesses high R-square value 97.49%, which indicates its strong predictive capability. Nevertheless, outperforms it, exhibiting an 99.81%. term, however, proves be best among them all, displaying perfect 99.90%. A similar observation is detected cold findings suggest term superior greater accuracy. research expected provide valuable insight into how can used maximize reduce associated environmental concerns.

Язык: Английский

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Fabrication of polypyrrole gas sensor for detection of NH3 using an oxidizing agent and pyrrole combinations: Studies and characterizations

Heliyon, Год журнала: 2023, Номер 9(7), С. e17611 - e17611

Опубликована: Июнь 25, 2023

The organic polymer known as Polypyrrole (Ppy) is synthesized when pyrrole monomers are polymerized. Excellent thermal stability, superior electrical conductivity, and environmental stability all characteristics of Polypyrrole. Chemical oxidative polymerization was used to synthesize Ppy using Ferric chloride (FeCl3) an oxidizing agent surfactant CTAB in aqueous solution. Oxidant varied different molar ratios (2, 3, 4 5). It found that increasing this ratio up increases PPy's conductivity. XRD, FTIR, SEM were characterize Ppy. conductive nature studied by I-V characteristics. best for the NH3 gas response.

Язык: Английский

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A Domino Dearomative ipso-Annulation/Desymmetrization Approach: Stereoselective Access to Tricyclic Alkaloid Skeletons

Organic Letters, Год журнала: 2024, Номер 26(23), С. 4904 - 4909

Опубликована: Июнь 5, 2024

Herein, we reveal an unprecedented domino annulation of

Язык: Английский

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Probing the physical properties for prospective high energy applications of QMnF₃ (Q = Ga, In) halide perovskites compounds employing the framework of density functional theory

RSC Advances, Год журнала: 2023, Номер 13(27), С. 18788 - 18798

Опубликована: Янв. 1, 2023

We use WIEN2K to conduct density functional theory computations explore the structural, thermodynamic, optoelectronic, and mechanical properties of fluoroperovskites QMnF3 (Q = Ga, In). The application Birch-Murnaghan equation energy versus volume, formation energy, tolerance factor confirms structural stability these two In) materials. thermodynamic compounds is confirmed by results phonon calculation, while from values elastic constants. GaMnF3 demonstrates a high capacity withstand both compressive shear stresses. A lower bulk modulus responsible for weaker ability InMnF3 endure changes in volume. Compared GaMnF3, possesses rigidity having greater modulus, indicating resistance shape. However, are characterized as mechanically brittle, anisotropic, ductile. band structure that was determined indicates exhibit metallic character. states analysis further supports nature InMnF3. In "Mn" "F" atoms valence significantly participate total states, whereas InMnF3, also dominate states. ε1(0) computed positive i.e. > 0, agree with Penn's model. calculate optical potential materials interest applications optoelectronic gadgets including light-emitting diodes attributed their absorption ultraviolet-visible zone. believe this work may provide comprehensive insight, encouraging exploration experimental studies.

Язык: Английский

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Room-Temperature Synthesis of Biogenic δ-MnO₂ NPs for the Dehydrogenative Coupling of Diamines with Alcohols for Benzimidazole and Quinoxaline Synthesis: An Efficient Catalyst for Electrochemical Applications

Langmuir, Год журнала: 2023, Номер 39(44), С. 15474 - 15486

Опубликована: Окт. 24, 2023

An efficient, unique, and eco-friendly biogenic synthesis of single-crystalline δ-phase manganese oxide nanoparticles (MnO2 NPs) using Gliricidia sepium leaves (GSL) extract at room temperature has been revealed for the first time. The active chemicals present in GSL were found to serve as both reducing stabilizing agents. catalyst shows an excellent surface area 301.13 m2 g-1, a mean pore diameter 4.01 nm, 39.97% w/w metal content. reactivity synthesized was demonstrated by achieving one-pot benzimidazoles quinoxalines via acceptorless dehydrogenative coupling strategy utilizing biorenewable alcohols. release hydrogen gas observed only side product proven its successful utilization alkene reduction which supports mechanistic elucidation. useful byproduct highlights scientific importance methodology. Additionally, gram-scale recyclability studies are deliberated. Importantly, δ-MnO2 NP exhibited superior catalytic activity high durability toward evolution reaction alkaline media, highlighting dual use catalyst. NPs attain current density 10 mA/cm2 overpotential 154 mV with Tafel slope 119 mV/dec.

Язык: Английский

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Iron-catalyzed one-pot tandem oxidation/acylation/dearomatization of biaryl ynones with benzyl alcohols: Access to diversified acylated spiro[5.5]trienones

Tetrahedron Letters, Год журнала: 2025, Номер unknown, С. 155469 - 155469

Опубликована: Янв. 1, 2025

Язык: Английский

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Electrochemical Oxidative Dibrominative Cyclization of 1,n-Enynes with Hypervalent Iodoarene Intermediates Utilizing Recyclable Bromine Ionic Liquids

The Journal of Organic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Апрель 5, 2025

An electrochemical approach with iodoarene as a mediator using recyclable ionic liquids to achieve dibromonative cyclization of 1,n-enynes has been reported. With bromine sources, in situ generation iodine(III) compounds through oxidation cyclization, variety heterocyclic frameworks containing both vinyl and alkyl bromide groups had obtained high yields good selectivity.

Язык: Английский

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