Recent progress in visible light‐driven halogenation: Chlorination, bromination, and iodination

Bulletin of the Korean Chemical Society, Год журнала: 2024, Номер 45(9), С. 738 - 758

Опубликована: Сен. 1, 2024

Abstract Halogenation is one of the most important transformations in organic synthesis. Halogenated compounds are employed many reactions to prepare useful molecules. Many methods have been developed introduce halogens into different compounds. Visible light‐mediated efficient, low‐toxic, and mild‐condition applied for various chemistry transformations. Remarkably, there has an increasing development application visible light‐induced halogenation recent years. Herein, we present a comprehensive summary including chlorination, bromination, iodination under light irradiation since 2020.

Язык: Английский

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Metal-Free Synthesis of α-H Chlorine Alkylaromatic Hydrocarbons Driven by Visible Light

Molecules, Год журнала: 2025, Номер 30(2), С. 312 - 312

Опубликована: Янв. 14, 2025

Chlorination is a widely used strategy at the industrial level. Chlorinated products represent indispensable building blocks in synthetic chemistry. Here, we report synthesis of benzyl chlorides and α-chloro alkyl arenes, mediated by visible light, starting from variously substituted toluenes N,N-dichloroacetamide as chlorinating reagent. This methodology valid alternative to syntheses previously reported literature. It metal-free process does not involve use additives or radical initiators.

Язык: Английский

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Concurrent Photocatalytic CO₂ Reduction and 1‐Phenylethanol Oxidation Regulated by Chloride Ion‐Capped CdS@Zn_xCd_1‐xS@ZnS QDs

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

Abstract Solar‐driven photocatalytic CO 2 reduction coupled with the oxidation of organic compounds to value‐added chemicals is a promising strategy, which can utilize both photogenerated electrons and holes. Here, gradient alloyed CdS@Zn x Cd 1‐x S@ZnS quantum dots (quasi‐Type II band structure) capped Cl − ligands demonstrate great potential in simultaneous conversion 1‐phenylethanol into syngas pinacol. The passivation maximizes exposure surface‐active sites improves their electronic structure, providing prerequisite for efficient execution redox reactions. More importantly, p–π conjugation between chloride‐ion benzene ring provides bridge ultrafast transfer holes, greatly promotes activation Cα─H bond release mass reactive free hydrogen. This process effectively lowers thermodynamic energy barrier reduction, even as excessively high kinetic barriers arising from accumulation excess protons also enable them self‐couple, leading generation (CO ≈ 75 mmol g −1 h ; selectivity 69.86%). work insights future artificial photosynthesis achieve activity cost‐effective storable renewable resources co‐production substances through synergistic oxidation.

Язык: Английский

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Photocatalytic Synthesis of Diaryl Amides via Direct Coupling of Methyl Arenes and Nitroarenes

Organic Letters, Год журнала: 2025, Номер unknown

Опубликована: Апрель 17, 2025

A direct and effective method for synthesizing diaryl amides has been developed through the photocatalytic coupling of methyl nitroarenes. This employs FeCl3 as a redox-active photocatalyst under mild conditions to enable selective benzylic C-H activation concurrent nitro group reduction, eliminating necessity pre-functionalization. exhibits broad substrate scope, high functional tolerance, improved atom economy, offering sustainable practical alternative amide bond formation.

Язык: Английский

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Visible-light-induced Synthesis of Organic Peroxides via Decarboxylative Couplings of Carboxylic Acids, Alkenes and tert-Butyl Hydroperoxide

Chemical Research in Chinese Universities, Год журнала: 2024, Номер unknown

Опубликована: Авг. 29, 2024

Язык: Английский

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