Copper Catalyzed Heteroannelation Reaction between 4‐Thiazolidinones and O‐Acetyl Oximes to Synthesize 2,5‐Diphenyl‐3‐(Pyrimidin‐2‐yl)‐3,4‐Dihydro‐2H‐Pyrrolo‐[2,3‐d]‐Thiazole DOI

Parth P. Patel,

Kishor H. Chikhalia

ChemistrySelect, Год журнала: 2024, Номер 9(23)

Опубликована: Июнь 18, 2024

Abstract An intermolecular copper catalyzed heteroannelation reaction using Csp 3 ‐Csp radical coupling approach has been accomplished to synthesize 2,5‐diphenyl‐3‐(pyrimidin‐2‐yl)‐3,4‐dihydro‐2 H ‐pyrrolo[2,3‐ d ]thiazole. C−C between 4‐thiazolidinones and O‐acetyl oximes under Cu catalyst further cyclizes get the target molecule thiazolidine‐fused nucleus. This unified method offers access novel fused heterocycles with pyrimidines bearing 4‐thiazolidinone in moderate higher yields. The optimization study includes various catalysts, oxidants, bases solvents at different temperatures.

Язык: Английский

Decatungstate-photocatalyzed direct acylation of N-heterocycles with aldehydes DOI
Zhiyang Zhang,

Fukun Cheng,

Xinyu Ma

и другие.

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

Процитировано

22

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

Qihui Huang,

Jianchao Liu, Jie‐Ping Wan

и другие.

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

Процитировано

18

A visible-light-promoted metal-free approach for N–H insertions by using donor/donor diazo precursors DOI Creative Commons
Yu Zhang, Qiannan Li, Ping Wang

и другие.

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

Процитировано

11

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

Hao‐Cong Li,

Guannan Li,

Hao-Sen Wang

и другие.

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

Процитировано

18

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 DOI

Zi-Jun Hu,

Wei Chen,

Xinyu Lyu

и другие.

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

Опубликована: Май 13, 2024

A copper-catalyzed [3 + 2] annulation of

Язык: Английский

Процитировано

4

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

Shi-Mei He,

Yunbo Yang,

Lv-Yan Liu

и другие.

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

Процитировано

0

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

Yu Tian,

H. Tao,

Kexin Yang

и другие.

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

Процитировано

0

I2/Amine Synergistic Catalysis Enables 2,2’-Bipyridine Synthesis from Oxime Esters and Enals DOI
Xing Jin, Jiahao Zhou, Hao Zeng

и другие.

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

Процитировано

0

A Comprehensive Bibliometric Analysis of Green Buildings during 2013–2023 DOI
Wei Liu,

Q Chen,

Hai Ren

и другие.

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

Опубликована: Март 26, 2025

Язык: Английский

Процитировано

0

Iron-Catalyzed [3 + 2] Annulation of O-Acyl Oximes with 2-Hydroxy-1-Naphthoates for the Synthesis of Benzo[g]indoles DOI
Zhen Cui, Hui Li,

Xian-Heng Ding

и другие.

Organic Letters, Год журнала: 2025, Номер unknown

Опубликована: Май 28, 2025

An iron-catalyzed [3 + 2] annulation of O-acyl oximes with 2-hydroxy-1-naphthoates has been developed. This strategy features the simultaneous activation both substrates to form two radical intermediates. Subsequent selective C-N coupling followed by sequential condensation and 1,3-ester migration affords 1H- or 3H-benzo[g]indoles. In terms derived from 4-oxocyclohexanone 4-azacyclohexanone, further ring-opening furnishes 2-(2-hydroxyethyl)- 2-(2-aminoethyl)-1H-benzo[g]indoles.

Язык: Английский

Процитировано

0