Pd-catalyzed 5-exo-dig cyclization/etherification cascade of N-propargyl arylamines for the synthesis of polysubstituted furans DOI

Mengru Li,

Meng-Yao Zheng,

Dong‐Chao Wang

и другие.

Chemical Communications, Год журнала: 2024, Номер 60(60), С. 7721 - 7724

Опубликована: Янв. 1, 2024

A method for the synthesis of furans bearing indoline skeletons was developed

Язык: Английский

“On-water” defluorinative cyclization of trifluoromethyl enones with phosphine oxides: synthesis of polysubstituted furans DOI

Man-Hang Feng,

Shu-Ji Gao,

M Kellis

и другие.

Organic Chemistry Frontiers, Год журнала: 2024, Номер 11(14), С. 3974 - 3981

Опубликована: Янв. 1, 2024

A defluorinative cyclization of readily available trifluoromethyl enones with phosphine oxides for the synthesis polysubstituted furans is developed in a pure water solution.

Язык: Английский

Процитировано

10

Modular Synthesis of Furans with Four Nonidentical Substituents by Aqueous Defluorinative Reaction of Trifluoromethyl Enones with Two Nucleophiles DOI
Xueying Huang,

Shu-Ji Gao,

Danhua Ge

и другие.

Organic Letters, Год журнала: 2024, Номер unknown

Опубликована: Дек. 24, 2024

A three-component reaction of trifluoromethyl enones, phosphine oxides, and alcohols in water solution is developed. This defluorinative occurs through a cascade process involving defluorophosphorylation, defluoroalkyloxylation, defluoroheteroannulation, enabling the modular synthesis furans with four distinct substituents: C2-alkyloxy, C3-trifluoromethyl, C4-phosphoryl, C5-(hetero)aryl groups. Moreover, apart from alcohol substrates, scope nucleophiles could be further extended to phenols, azacycles, or sulfonamide.

Язык: Английский

Процитировано

7

Three-Component Sulfonylation and Heteroannulation Enabled by 3-Fold Defluorofunctionalization of Trifluoromethyl Enones DOI

Shu-Ji Gao,

Xueying Huang, M Kellis

и другие.

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

Опубликована: Фев. 23, 2025

Trifluoromethyl enone emerges as a versatile and multifaceted building block in organic synthesis. A defluorinative heterocyclization reaction of readily available β,β-ditrifluoromethylated enones biocompatible sodium sulfinates has been developed for the modular synthesis densely functionalized furans with regio-defined C2,4-bissulfonyl C3-trifluoromethyl substitutions. This three-component method proceeds through sequential sulfonylation intramolecular O-cyclization, enabling assembly one furan ring, formation C-SO2/C–O bonds, cleavage three C(sp3)-F bonds one-pot manner under transition metal-free conditions. Moreover, obtained product can further react benzyne precursor to generate 1,4-epoxynaphthalene Diels–Alder cycloaddition. The is also distinguished by its broad substrate scope, excellent functional group tolerance, scalability.

Язык: Английский

Процитировано

1

Substrate-controlled [4+1] and [3+2] annulations of ninhydrin-derived Morita–Baylis–Hillman carbonates to access polysubstituted furans and cyclopentenes DOI
Kai‐Kai Wang,

LI Yan-li,

Yafei Li

и другие.

Chemical Communications, Год журнала: 2024, Номер 60(27), С. 3717 - 3720

Опубликована: Янв. 1, 2024

The substrate-enabled switching of the regioselectivity allows for efficient regiocontrol via [4+1] and [3+2] annulations ninhydrin-derived MBH carbonates with α,β-unsaturated ketones to access highly substituted furans cyclopentene.

Язык: Английский

Процитировано

5

Palladium-Catalyzed Domino Heck/Cross-Coupling Cyclization Reaction: Diastereoselective Synthesis of Furan-Containing Indolines DOI
Furong Li, Ye Yuan,

Donghao Lyu

и другие.

The Journal of Organic Chemistry, Год журнала: 2024, Номер 89(11), С. 7552 - 7560

Опубликована: Май 28, 2024

Herein, a palladium-catalyzed diastereoselective dearomatization/cross-coupling cyclization reaction between N-arylacyl indoles and (E)-β-chlorovinyl ketones is reported. Through this cyclization/cycloisomerization cascade, series of furan-containing indolines were obtained in yields up to 95%. The features readily accessible starting materials, benzyl Pd(II)-catalyzed cycloisomerization ketones, the sequential formation three bonds bis-heterocycles, excellent diastereoselectivity. More importantly, carbene–secondary migratory insertion proven be critical process cyclizations.

Язык: Английский

Процитировано

4

Iron-Catalyzed Photoredox Alcohol α-C–H Alkylation and Tandem Intramolecular Cyclization: Facile Access to Multisubstituted 2,3-Dihydrofurans and γ-Butyrolactones DOI
Jia‐Jin Jason Chen, Ziyu Gan, Yongqiang Zhang

и другие.

Organic Letters, Год журнала: 2024, Номер 26(25), С. 5329 - 5334

Опубликована: Июнь 13, 2024

Multisubstituted furans occupy a pivotal position within the realms of synthetic chemistry and pharmacological science due to their distinctive chemical configurations inherent properties. We herein introduce tandem difunctionalization protocol alcohols for efficient synthesis multisubstituted 2,3-dihydrofurans γ-butyrolactones through combination photocatalysis iron catalysis under mild conditions. Photoredox alcohol α-C(sp3)–H activation Pinner-type intramolecular cyclization are two key processes. This method features significant convenience, economic benefits, environmental friendliness.

Язык: Английский

Процитировано

3

Pd-Catalyzed Domino Heck Cyclization/Cross-coupling of Indoles with β-Chlorovinyl Ketones: Synthesis of Antifungal Active Furan-bearing Indolo[2,1-α]isoquinolines DOI

Yongqi Bai,

Xingrui Qi,

Hanjing Li

и другие.

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

Опубликована: Янв. 1, 2025

The reaction enabling the rapid construction of three bonds to form furan-bearing indolo[2,1- α ]isoquinolines, which exhibit certain antifungal activity in vitro , is presented.

Язык: Английский

Процитировано

0

Metal-Free Catalytic Synthesis of Tetrasubstituted Furans from α-Hydroxy Ketones and Cyano Compounds DOI Creative Commons

Yu Zeng,

Shi-Hang Yang,

Ji-Lin Guo

и другие.

Molecules, Год журнала: 2025, Номер 30(8), С. 1832 - 1832

Опубликована: Апрель 19, 2025

A novel method for the efficient and straightforward synthesis of tetrasubstituted furans is presented, employing a base-catalyzed reaction α-hydroxy ketones cyano compounds. The proceeds under relatively mild conditions, utilizes readily available starting materials, exhibits good functional group tolerance high yields. Notably, this obviates need expensive metal catalysts introduces crucial groups such as amino moieties. Furthermore, it avoids prerequisite functionalization substrates, thereby enhancing atomic economy.

Язык: Английский

Процитировано

0

Divergent Access to α-Carbonyl-α′-vinyl Sulfoxonium Ylides and Polysubstituted Furans from β-Ketosulfoxonium Ylides and Ynone-Esters DOI

Sudhir Rama Ingale,

Manas Ranjan Sahu,

Balasaheb R. Borade

и другие.

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

Опубликована: Апрель 28, 2025

Here, we describe the synthesis of novel α-carbonyl-α'-vinyl sulfoxonium ylides under ambient, catalyst-free, and additive-free conditions, demonstrating broad substrate scope scalability using β-ketosulfoxonium α-ynone-esters. Furthermore, these serve as versatile intermediates for highly substituted furans via Brønsted acid (p-TsOH) catalysis at 130 °C. This approach offers key advantages, including wide compatibility, divergent product formation from common precursors, gram-scale feasibility, good to excellent yields.

Язык: Английский

Процитировано

0

Click Synthesis and the Properties Study of Sustainable and Biodegradable Furan-based Poly(imino-furano-triazole) DOI
Denis A. Kolykhalov,

Dmitry S. Gurov,

Anastasia N. Golysheva

и другие.

Journal of Polymers and the Environment, Год журнала: 2025, Номер unknown

Опубликована: Май 15, 2025

Язык: Английский

Процитировано

0