Transition-Metal-Free C–N Cross-Coupling Enabled by a Multifunctional Reagent

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(10), С. 6476 - 6480

Опубликована: Март 4, 2024

We report the design and development of a transition-metal-free cross-coupling reaction phenols primary amines using simple readily available multifunctional reagent. The reactions work by induced proximity electronic activation both nucleophile electrophile for net dehydrative C-N coupling reactions. Notably, do not involve use transition metal bond formation, preactivation phenol electrophile, or exclusion air moisture. mild conditions tolerate broad range functional groups allow this to be applied late-stage functionalization complex substrates with wide scope partners.

Язык: Английский

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Covalent Organic Frameworks as Heterogeneous Photocatalysts for Cross-Coupling Reactions

Green Chemistry, Год журнала: 2024, Номер 26(18), С. 9619 - 9651

Опубликована: Янв. 1, 2024

This review focuses on advances in covalent organic framework (COF) photocatalysts for cross-coupling reactions, which provide a greener catalytic route transformations.

Язык: Английский

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Magnetically retractable tea extract stabilized palladium nanoparticles for denitrogenative cross-coupling of aryl bromides with arylhydrazines under green conditions: An alternate route for the biaryls synthesis

Catalysis Communications, Год журнала: 2024, Номер 187, С. 106862 - 106862

Опубликована: Фев. 1, 2024

Novel palladium based magnetic nanocatalyst was synthesized by the co-precipitation method and coated with silica tea extract as stabilizing agent. Palladation onto prepared nanocomposite done to get ION-SiO2/TE-Pd(0) catalyst. Our study is one of limited number studies reported for catalytic denitrogenative coupling arylbromide arylhydrazine. This led construction important substituted biaryls bearing various substituents 82–92% yields. The characterized using structural morphological characterization techniques. It also observed that only 2 mol% catalyst sufficient catalysis reusable upto six cycles.

Язык: Английский

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Photocatalytic Applications of Covalent Organic Frameworks: Synthesis, Characterization, and Utility

Nanoscale, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

This review highlights the recent advances in utilizing covalent organic frameworks (COFs) for photocatalytic applications.

Язык: Английский

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Asymmetric Intramolecular Amination Catalyzed with Cp*Ir-SPDO via Nitrene Transfer for Synthesis of Spiro-Quaternary Indolinone

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(28), С. 18841 - 18847

Опубликована: Июль 8, 2024

An asymmetric intramolecular spiro-amination to high steric hindering

Язык: Английский

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Cyclic natural product oligomers: diversity and (bio)synthesis of macrocycles

Chemical Society Reviews, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 25, 2024

This graphical abstract compares enzymatic and chemical macrocyclization of cyclic natural product oligomers, highlighting bacterial, fungal, plant enzymes, alongside methods like ring-closing metathesis, lactonization, disulfide bridges, cycloaddition.

Язык: Английский

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Waste for Product: Pd and Pt Nanoparticle-Modified Ni Foam as a Universal Catalyst for Hydrogen/Oxygen Evolution Reaction and Methyl Orange Degradation

Catalysts, Год журнала: 2025, Номер 15(2), С. 133 - 133

Опубликована: Янв. 30, 2025

Declining natural resources make the recovery of metals from waste solutions a promising alternative. Moreover, processing into finished product has its economic justification and benefits. Thus, aim this research was developing Waste for Product strategy, indicating possibility with low content platinum-group catalyst synthesis. The results obtained confirmed that diluted synthetic containing trace amount valuable metal ions (Pd, Pt) can be used process Catalysts produced in form palladium platinum nanoparticles were successfully deposited on Ni foam due to galvanic displacement mechanism. Synthesized catalysts characterized using UV-Vis spectrophotometry, SEM/EDS, XRD techniques. Electro- catalytic properties tested hydrogen/oxygen evolution reactions methyl orange degradation, respectively. electrocatalytic tests indicated modification nickel surface by consisting noble as Pd Pt significantly increase activity hydrogen oxygen comparison non-treated samples. Catalytic performed degradation shorten time several hours 15 min. most favorable following order Pd1.0Pt0@Ni > Pd0Pt1.0@Ni Pd0.5Pt0.5@Ni no catalyst, best performance pure surface.

Язык: Английский

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A DFT mechanistic study on nickel-catalyzed arylation of amino alcohols with aryl electrophiles: insights into the origins of chemoselectivity

Catalysis Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

DFT calculations fully rationalize the mechanistic details and origins of chemoselectivity for nickel-catalyzed arylation amino alcohols with aryl electrophiles.

Язык: Английский

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Sustainable, precious-metal-free C–N cross coupling through photocatalysis

New Journal of Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Photoredox catalysis has evolved as a sustainable method of constructing C–N bonds.

Язык: Английский

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Sulfoxides as electrophilic substrates in cross-coupling reactions

Journal of Sulfur Chemistry, Год журнала: 2025, Номер unknown, С. 1 - 14

Опубликована: Фев. 25, 2025

Язык: Английский

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