Photodriven Methane Conversion on Transition Metal Oxide Catalyst: Recent Progress and Prospects

Advanced Science, Год журнала: 2023, Номер 11(8)

Опубликована: Окт. 26, 2023

Methane as the main component in natural gas is a promising chemical raw material for synthesizing value-added chemicals, but its harsh conversion process often causes severe energy and environment concerns. Photocatalysis provides an attractive path to active convert methane into various products under mild conditions with clean sustainable solar energy, although many challenges remain at present. In this review, recent advances photocatalytic are systematically summarized. As basis of conversion, activation first elucidated from structural molecules. The study committed categorizing elucidating research progress laws intricate reactions according target products, including partial oxidation, reforming, coupling, combustion, functionalization. Advanced reactor designs also designed enrich options reliability performance evaluation. prospects discussed, which turn offers guidelines methane-conversion-related photocatalyst exploration, reaction mechanism investigation, advanced photoreactor design.

Язык: Английский

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Alkene dialkylation by triple radical sorting

Nature, Год журнала: 2024, Номер 628(8006), С. 104 - 109

Опубликована: Фев. 13, 2024

Язык: Английский

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Recent advances of decatungstate photocatalyst in HAT process

Organic & Biomolecular Chemistry, Год журнала: 2024, Номер 22(13), С. 2523 - 2538

Опубликована: Янв. 1, 2024

The decatungstate anion (W

Язык: Английский

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A Bimolecular Homolytic Substitution-Enabled Platform for Multicomponent Cross-Coupling of Unactivated Alkenes

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(15), С. 10274 - 10280

Опубликована: Апрель 3, 2024

The construction of C(sp3)–C(sp3) bonds remains one the most difficult challenges in cross-coupling chemistry. Here, we report a photoredox/nickel dual catalytic approach that enables simultaneous formation two linkages via trimolecular alkenes with alkyl halides and hypervalent iodine-based reagents. reaction harnesses bimolecular homolytic substitution (SH2) mechanism chemoselective halogen-atom transfer (XAT) to orchestrate regioselective addition electrophilic nucleophilic radicals across unactivated without need for directing auxiliary. Utility is highlighted through late-stage (fluoro)alkylation (trideutero)methylation C═C bearing different patterns, offering straightforward access drug-like molecules comprising sp3-hybridized carbon scaffolds.

Язык: Английский

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Engaging Alkenes in Metallaphotoredox: A Triple Catalytic, Radical Sorting Approach to Olefin-Alcohol Cross-Coupling

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(18), С. 12300 - 12309

Опубликована: Апрель 24, 2024

Metallaphotoredox cross-coupling is a well-established strategy for generating clinically privileged aliphatic scaffolds via single-electron reactivity. Correspondingly, expanding metallaphotoredox to encompass new C(

Язык: Английский

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Enantioselective alkylation of α-amino C(sp3)−H bonds via photoredox and nickel catalysis

Nature Catalysis, Год журнала: 2024, Номер 7(8), С. 889 - 899

Опубликована: Июль 4, 2024

Язык: Английский

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The mechanism of visible light-induced C–C cross-coupling by C_sp³–H bond activation

Chemical Society Reviews, Год журнала: 2023, Номер 52(16), С. 5373 - 5387

Опубликована: Янв. 1, 2023

The chemistry and the reaction mechanisms behind four catalytic protocols currently available for visible light-induced C–C cross-coupling by activation of C sp 3 –H bonds are described.

Язык: Английский

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Asymmetric imino-acylation of alkenes enabled by HAT-photo/nickel cocatalysis

Chemical Science, Год журнала: 2023, Номер 14(23), С. 6449 - 6456

Опубликована: Янв. 1, 2023

By merging nickel-mediated facially selective aza-Heck cyclization and radical acyl C-H activation promoted by tetrabutylammonium decatungstate (TBADT) as a hydrogen atom transfer (HAT) photocatalyst, we accomplish an asymmetric imino-acylation of oxime ester-tethered alkenes with readily available aldehydes the source, enabling synthesis highly enantioenriched pyrrolines bearing acyl-substituted stereogenic center under mild conditions. Preliminary mechanistic studies support Ni(i)/Ni(ii)/Ni(iii) catalytic sequence involving intramolecular migratory insertion tethered olefinic unit into Ni(iii)-N bond enantiodiscriminating step.

Язык: Английский

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Visible-light induced direct C(sp³)–H functionalization: recent advances and future prospects

Organic Chemistry Frontiers, Год журнала: 2024, Номер 11(18), С. 5278 - 5305

Опубликована: Янв. 1, 2024

This review summarizes the latest methodological advances in photocatalytic C(sp 3 )–H functionalization, with a particular emphasis on formation of C–P, C–B, C–S bonds, etc ., and some prominent efforts asymmetric C–H functionalization.

Язык: Английский

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Enantioselective Construction of Quaternary Stereocenters via Cooperative Photoredox/Fe/Chiral Primary Amine Triple Catalysis

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(13), С. 9404 - 9412

Опубликована: Март 20, 2024

The catalytic and enantioselective construction of quaternary (all-carbon substituents) stereocenters poses a formidable challenge in organic synthesis due to the hindrance caused by steric factors. One conceptually viable potentially versatile approach is coupling C–C bond through an outer-sphere mechanism, accompanied realization enantiocontrol cooperative catalysis; however, examples such processes are yet be identified. Herein, we present method for creating different compounds with photoredox/Fe/chiral primary amine triple catalysis. This facilitates connection unactivated alkyl source tertiary moiety, which also rare. scalable process exhibits mild conditions, does not necessitate use base, possesses good functional-group tolerance. Preliminary investigations into underlying mechanisms have provided valuable insights reaction pathway.

Язык: Английский

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