Photoinduced, additive- and photosensitizer-free multi-component synthesis of naphthoselenazol-2-amines with air in water

Green Chemistry, Год журнала: 2023, Номер 25(20), С. 7983 - 7987

Опубликована: Янв. 1, 2023

An atom- and step-economical, efficient eco-friendly method for constructing naphthoselenazol-2-amines through a visible-light photocatalytic multi-component reaction under aqueous phase conditions is reported.

Язык: Английский

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Visible light-induced organophotoredox-catalyzed difunctionalization of alkenes and alkynes

Green Chemistry, Год журнала: 2023, Номер 25(21), С. 8459 - 8493

Опубликована: Янв. 1, 2023

This review comprehensively summarizes visible light-induced difunctionalization strategies for alkene and alkyne systems in metal-free conditions with literature coverage up to July 2023.

Язык: Английский

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Photochemical and Electrochemical Synthesis of Oxazoles and Isoxazoles: An Update

Advanced Synthesis & Catalysis, Год журнала: 2024, Номер 366(10), С. 2186 - 2208

Опубликована: Апрель 4, 2024

Abstract This review presents an outline of current advancements in the photochemical and electrochemical synthesis oxazoles isoxazoles. Oxazole isoxazole are important building blocks for a variety medicinally useful compounds. Therefore, these heterocycles via sustainable technologies is worth demanding. Photochemical two among few technologies. covers brief discussion on reaction parameters like catalysts, substrates scope, temperature, solvents, electrodes, electrolytes (in case process), light source process) individual reaction. Detailed mechanistic insight each also presented. Finally, summary, future direction toward development effective methods isoxazoles

Язык: Английский

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Visible-Light-Promoted Metal- and Photocatalyst-Free Reactions between Arylglyoxylic Acids and Tetraalkylthiuram Disulfides: Synthesis of α-Ketoamides

The Journal of Organic Chemistry, Год журнала: 2024, Номер 89(3), С. 1473 - 1482

Опубликована: Янв. 16, 2024

A convenient and new synthetic approach has been developed for the oxidative cross-coupling of C–N bond through reaction between arylglyoxylic acids tetraalkylthiuram disulfides. The proceeds under ambient air at room temperature in presence visible light. This offers a metal-, base-, photocatalyst-, solvent-free synthesis various α-ketoamides with moderate to excellent yields via radical pathway. In addition, this protocol demonstrates potential application gram-scale synthesis.

Язык: Английский

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Photocatalyzed C3-α-aminoalkylation of quinoxalin-2(1H)-ones with amino acid-derived oxime esters under metal-free conditions

Molecular Catalysis, Год журнала: 2025, Номер 573, С. 114795 - 114795

Опубликована: Янв. 5, 2025

Язык: Английский

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H-bond promoted NPh3-mediated SrTiO3-photocatalyzed cascade decarboxylative coupling/annulation of benzo[d]isothiazole 1,1-dioxides

Journal of Catalysis, Год журнала: 2024, Номер 434, С. 115509 - 115509

Опубликована: Апрель 21, 2024

Язык: Английский

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Visible-light-induced reusable decatungstate-photocatalyzed radical cascade alkylation/cyclization of isocyanides with simple alkanes, ethers and ketones

Green Synthesis and Catalysis, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

With reusable sodium decatungstate (NaDT) as the photocatalyst, hydrocarbons (alkanes, ethers and ketones) alkylating agents, a wide range of alkylated fused N-heterocycles were obtained in high yield.

Язык: Английский

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Boryl Radical as a Catalyst in Enabling Intra‐ and Intermolecular Cascade Radical Cyclization Reactions: Construction of Polycyclic Molecules

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(25)

Опубликована: Апрель 9, 2024

Abstract Cascade radical cyclization constitutes an atom‐ and step‐economic route for rapid assembly of polycyclic molecular skeletons. Although array redox‐active metal catalysts has recently shown robust applications in enabling various catalytic cascade processes, the use free organic as catalyst, which is capable triggering strategically distinct cascades, rarely been developed. Here, we disclosed that benzimidazolium‐based N ‐heterocyclic carbene (NHC)‐boryl catalyzing reactions both intra‐ intermolecular pathways, assembling [5,5] fused bicyclic [6,6,6] tricyclic molecules, respectively. The start with chemo‐ regioselective addition boryl catalyst to a tethered alkene or alkyne moiety, followed by either intramolecular formal [3+2] [2+2+2] cycloaddition process construct bicyclo[3.3.0]octane tetrahydrophenanthridine skeletons, Eventually, β‐elimination occurs release completing cycle. High excellent diastereoselectivity achieved under substrate control.

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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Photoinduced Synthesis of Imidazopyridines and Imidazothiazoles

Topics in heterocyclic chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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