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 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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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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Three-Component Ring-Expansion Reaction of Indoles Leading to Synthesis of Pyrrolo[2,3-c]quinolines

Organic Letters, Год журнала: 2023, Номер 25(37), С. 6886 - 6890

Опубликована: Сен. 7, 2023

Herein, we have developed an atom- and step-economic three-component cascade reaction that enables a modular platform for the synthesis of pyrrolo[2,3-c]quinoline compounds through ring-expansion/cyclization by way novel N1–C2 cleavage indoles. The metal-free catalytic system exhibits broad functional group tolerance.

Язык: Английский

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