Decatungstate-photocatalyzed direct acylation of N-heterocycles with aldehydes

Green Chemistry, Год журнала: 2024, Номер 26(12), С. 7331 - 7336

Опубликована: Янв. 1, 2024

A novel photocatalytic acylation strategy was developed harnessing tetrabutylammonium decatungstate (TBADT) as a hydrogen atom transfer (HAT) photocatalyst to facilitate the direct coupling of aldehydes with N-heterocycles at ambient temperature.

Язык: Английский

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Electrochemical Enaminone-Thioamide Annulation and Thioamide Dimeric Annulation for the Tunable Synthesis of Thiazoles and 1,2,4-Thiadiazole

Organic Letters, Год журнала: 2024, Номер 26(25), С. 5263 - 5268

Опубликована: Июнь 14, 2024

A green and sustainable electrochemical oxidative cyclization of enaminones with thioamides under metal- oxidant-free conditions has been developed, providing an efficient approach for thiazole synthesis. Furthermore, 1,2,4-thiadiazoles can be selectively accessed via the dimerization in absence enaminones.

Язык: Английский

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A visible-light-promoted metal-free approach for N–H insertions by using donor/donor diazo precursors

Green Chemistry, Год журнала: 2024, Номер 26(8), С. 4600 - 4608

Опубликована: Янв. 1, 2024

A metal-free and catalyst-free strategy is reported to achieve N–H insertions by coupling N -tosylhydrazones with diverse amines including aminopyridines, anilines, aliphatic amines, other nucleophiles such as imidazoles indoles.

Язык: Английский

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Photoredox-catalyzed difunctionalization of alkenes with oxime esters and NH-sulfoximines

Organic Chemistry Frontiers, Год журнала: 2023, Номер 11(1), С. 135 - 141

Опубликована: Ноя. 21, 2023

A visible-light-induced one-pot three-component reaction of cycloketone oxime esters, NH-sulfoximines, and alkenes was developed for the difunctionalization alkenes.

Язык: Английский

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Copper-Catalyzed [3 + 2] Annulation of O-Acyl Oximes with 4-Sulfonamidophenols for the Synthesis of 5-Sulfonamidoindoles and 2-Amido-5-sulfonamidobenzofuran-3(2H)-ones

Organic Letters, Год журнала: 2024, Номер 26(20), С. 4229 - 4234

Опубликована: Май 13, 2024

A copper-catalyzed [3 + 2] annulation of

Язык: Английский

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Visible‐Light Promoted Minisci–Type Cyanoalkylation of Azauracils via C−C Bond Cleavage

European Journal of Organic Chemistry, Год журнала: 2024, Номер 27(22)

Опубликована: Март 16, 2024

Abstract A photo‐induced Minisci–type cyanoalkylation of azauracils was developed under metal‐free and base‐free conditions. Readily available cyclobutanone oxime esters were used as the cyanoalkylating reagents via C−C bond cleavage to generate γ‐cyanoalkyl azauracil derivatives in good moderate yields. The introduced cyano group can be easily converted into many other functional groups, thus makes current protocol more practical.

Язык: Английский

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Copper-Catalyzed Annulation of α,β-Unsaturated Ketoximes with Dialkyl Acetylenedicarboxylates for the Synthesis of Highly Substituted Pyridines

Organic Letters, Год журнала: 2025, Номер unknown

Опубликована: Янв. 24, 2025

A copper-catalyzed [4 + 2] annulation protocol from readily available α,β-unsaturated ketoximes and dialkyl acetylenedicarboxylates has been achieved. The approach enables the expedient construction of a series structurally new highly substituted pyridines with good functional group tolerance.

Язык: Английский

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Multicomponent Modular Synthesis of Chiral Bicyclic Bridged Compounds via an Alkenylfuran-Based Acylation/Rearrangement/Cyclization Sequence

Organic Letters, Год журнала: 2025, Номер unknown

Опубликована: Янв. 26, 2025

The catalytic asymmetric multicomponent acylation/rearrangement/cyclization of alkenylfurans with acyl oxime esters/arylamines or esters/arylamines/hydroxylamine has been developed. This method employs synergistic photoredox/Brønsted acid catalysis, enabling the efficient and versatile synthesis multifunctionalized [3.2.1] [4.2.1] bicyclic bridged compounds in high yields excellent diastereo- enantioselectivities.

Язык: Английский

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I2/Amine Synergistic Catalysis Enables 2,2’-Bipyridine Synthesis from Oxime Esters and Enals

Organic & Biomolecular Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

A synergistic I2/secondary amine catalysis has been developed for the modular assembly of 2,2'-bipyridines, employing oxime esters and enals as readily available starting materials. This method demonstrates a good substrate scope functional group tolerance can easily afford series structurally new 2,2'-bipyridines in moderate to yields.

Язык: Английский

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A Comprehensive Bibliometric Analysis of Green Buildings during 2013–2023

ICCREM 2021, Год журнала: 2025, Номер unknown, С. 1760 - 1772

Опубликована: Март 26, 2025

Язык: Английский

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