Synthesis of CF₃–Isoquinolinones and Imidazole-Fused CF₃–Isoquinolinones Based on C–H Activation-Initiated Cascade Reactions of 2-Aryloxazolines

The Journal of Organic Chemistry, Год журнала: 2024, Номер 89(14), С. 10180 - 10196

Опубликована: Июль 4, 2024

Presented herein are novel syntheses of CF

Язык: Английский

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Divergent synthesis of pyrrolizine derivatives through C−H bond functionalization of pyrroles

Chemical Communications, Год журнала: 2024, Номер 60(51), С. 6536 - 6539

Опубликована: Янв. 1, 2024

Presented herein is the synthesis of diversely functionalized pyrrolizines from reaction

Язык: Английский

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Synthesis of CF₃-Azafluorenes through the Cascade Reaction of 2H-Imidazoles with CF₃-Ynones

Organic Letters, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 25, 2024

A concise synthesis of trifluoromethyl (CF

Язык: Английский

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Synthesis of CF3-Indazoles via Rh(III)-Catalyzed C-H [4+1] Annulation of Azobenzenes with CF3-Imidoyl Sulfoxonium Ylides

Molecules, Год журнала: 2025, Номер 30(1), С. 183 - 183

Опубликована: Янв. 5, 2025

An efficient Rh(III)-catalyzed C-H activation of azobenzenes and subsequent [4+1] cascade annulation with CF3-imidoyl sulfoxonium ylides was developed, yielding diverse CF3-indazoles. This protocol featured easily available starting materials, excellent functional group tolerance high efficiency. Moreover, the antitumor activities selected CF3-indazoles against human cancer cell lines were also studied, results indicated that several compounds displayed considerable antiproliferative activities.

Язык: Английский

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g-C₃N₄-Based Heterogeneous Photocatalyzed Synthesis and Evaluation of Antitumor Activities of Fluoroalkylated 4H-Pyrido[1,2-a]pyrimidin-4-ones

The Journal of Organic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 26, 2025

The first example of heterogeneous photoredox-catalyzed fluoroalkylation 4H-pyrido[1,2-a]pyrimidin-4-ones has been developed. With low-cost commercial g-C3N4 as the recyclable photocatalyst and cheap sodium fluoroalkyl sulfonates source, a variety fluoroalkylated pyridopyrimidinones were constructed in moderate to high yields. present reaction can be easily scaled up with good efficiency, catalytic system reused 5 times slight loss activities. Furthermore, biological activity synthesized compounds was preliminarily investigated.

Язык: Английский

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Condition‐Controlled Selective Synthesis of CF₃‐Chromene and CF₃‐Benzofuran from N‐Phenoxyacetamide and CF₃‐Ynone

Chinese Journal of Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 27, 2025

Comprehensive Summary Presented herein is a condition‐controlled selective synthesis of CF 3 ‐chromene and ‐benzofuran based on the reaction N ‐phenoxyacetamide ‐ynone. When carried out in MeOH under catalysis Rh(III), formed via C—H metalation‐initiated alkenylation, acetamide group migration intramolecular oxo ‐nucleophilic addition. On other hand, when run DMSO promotion CsOAc, generated aza ‐Michael addition‐initiated [3,3]‐σ rearrangement, addition water elimination. To our knowledge, this first report construction chromene or benzofuran scaffold along with introduction unit from same starting materials. The methodology was scalable products could be readily transformed into valuable products. Moreover, thus obtained possess decent anticancer activity.

Язык: Английский

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Allylic Acetal as 3C Synthon in Rh(III)-Catalyzed Divergent C–H Activation/[4 + 3] Annulation: Easy Access to Benzodiazepines

Organic Letters, Год журнала: 2025, Номер unknown

Опубликована: Апрель 2, 2025

A concise synthesis of benzodiazepines via Rh(III) catalyzed C-H activation/ [4 + 3] annulation easily available 1-arylpyrazolidinones with allylic acetal has been developed. The was employed as a novel 3C synthon in this transformation. Benzodiazepines were built under mild reaction conditions high efficiency and chemoselectivity. atom-economy accessible substrates reveal potential application.

Язык: Английский

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Synthesis of Indazole Fused 2-Benzazepines with Polarity-Dependent Fluorescence Based on Formal [4 + 3] Annulation of 3-Aryl-1H-indazoles with Cyclopropenones

The Journal of Organic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Апрель 3, 2025

The effective assembly of benzazepine skeletons in a sustainable and atom-economical fashion remains challenging goal modern organic synthesis. Presented herein is novel synthesis indazole fused 2-benzazepine derivatives based on formal [4 + 3] annulation 3-aryl-1H-indazoles with cyclopropenones. formation products proceeds through Ir(III)-catalyzed aryl C-H bond metalation cyclopropenone ring-opening leading to acylation, followed by an intramolecular N-nucleophilic conjugated addition. By using this method, number valuable were effectively generated. This protocol addresses the challenges constructing medium-sized rings cascade C-H/C-C activation C-C/C-N formation. Moreover, photophysical properties thus obtained also evaluated. It turned out that all compounds tested showed solvent polarity-dependent fluorescence features, which could be potentially applied for revealing polarity their immediate environments.

Язык: Английский

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En Route to Anthanthrenes through Bottom-up APEX Strategy by peri-C–H Activation

Organic Letters, Год журнала: 2025, Номер unknown

Опубликована: Апрель 10, 2025

Accessing PAHs having all zigzag edges remains elusive, and this work demonstrates a general synthetic strategy for the construction of one such scaffold, namely, anthanthrene, through Ru(II)-catalyzed APEX reaction at masked-bay region. The protocol efficiently delivers range uniquely substituted anthanthrenes with excellent regioselectivity, which is supported by DFT studies. synthesis anthanthrone derivatives, core structure vat orange dyes, another highlight study.

Язык: Английский

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Cu(II)/Base Synergistic Promoted [2 + 1 + 3] Cyclization of Cyclic Ketones with α,β-Unsaturated Aldehydes/Ketones and NH₄I to Access Fused Pyridines

Organic Letters, Год журнала: 2024, Номер 26(34), С. 7191 - 7195

Опубликована: Авг. 20, 2024

Herein, a practical three-component [2 + 1 3] cyclization of various cyclic ketones with α,β-unsaturated aldehydes/ketones and ammonium iodide (NH4I) to access highly functional fused pyridines has been developed. The features this transformation include mild reaction conditions, readily available starting materials, excellent chemoselectivity. This protocol is compatible groups, the preliminary studies on mechanism are also provided.

Язык: Английский

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