Visible light-induced Z-scheme V2O5/g-C3N4 heterojunction catalyzed cascade reaction of unactivated alkenes

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Год журнала: 2022, Номер 44, С. 111 - 116

Опубликована: Дек. 2, 2022

Язык: Английский

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Visible-light-induced direct perfluoroalkylation/heteroarylation of [1.1.1]propellane to diverse bicyclo[1.1.1]pentanes (BCPs) under metal and photocatalyst-free conditions

Green Chemistry, Год журнала: 2023, Номер 25(3), С. 986 - 992

Опубликована: Янв. 1, 2023

This study describes a green and novel multi-component reaction for direct perfluoroalkylation/heteroarylation of [1.1.1]propellane with heteroarenes perfluoroalkyl iodines to diverse bicyclo[1.1.1]pentanes (BCPs).

Язык: Английский

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Alkyl radicals from diacyl peroxides: metal-/base-/additive-free photocatalytic alkylation of N-heteroaromatics

Green Chemistry, Год журнала: 2023, Номер 25(20), С. 7971 - 7977

Опубликована: Янв. 1, 2023

Alkyl diacyl peroxides were demonstrated to be efficient alkylating reagents for the visible-light-induced 4CzIPN-catalyzed direct C–H alkylation of N -heteroaromatics.

Язык: Английский

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Photoinduced, metal- and photosensitizer-free decarboxylative C–H (amino)alkylation of heteroarenes in a sustainable solvent

Green Chemistry, Год журнала: 2023, Номер 25(5), С. 1975 - 1981

Опубликована: Янв. 1, 2023

This study describes a green and sustainable photoinduced strategy for decarboxylative C–H (amino)alkylation of heteroarenes with carboxylic acids under metal- photosensitizer-free conditions.

Язык: Английский

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Visible-Light-Induced Energy-Transfer-Mediated Hydrofunctionalization and Difunctionalization of Unsaturated Compounds via Sigma-Bond Homolysis of Energy-Transfer Acceptors

ACS Catalysis, Год журнала: 2025, Номер 15(3), С. 1854 - 1941

Опубликована: Янв. 17, 2025

Over the past decade, visible-light-mediated energy-transfer (EnT) catalysis, particularly triplet–triplet (TTEnT) has emerged as a mild and environmentally friendly approach for diverse organic synthetic transformations. In contrast to photoredox which typically requires sacrificial electron donors or acceptors complete catalytic cycle, EnT photocatalysis generally proceeds with high atom economy while minimizing generation of wasteful byproducts. Furthermore, successful catalysis is contingent upon precise control redox potentials both photocatalysts substrates, strategies are primarily influenced by triplet energy compatibility between these entities. Considering growing importance photocatalysis, well hydrofunctionalization difunctionalization reactions in synthesis, this review systematically summarizes significant advancements EnT-enabled unsaturated compounds via sigma-bond homolysis over decade. Special emphasis placed on elucidating substrate scopes mechanistic scenarios. Additionally, discusses versatile applications methodologies addresses current challenges opportunities within evolving research field. This structured into six main categories based different types sigma-bonds undergoing homolysis. These include transformations mediated 1) N–O bond oxime esters other N,O-radical precursors; 2) N–S N-sulfonyl imines N,S-radical 3) chalcogen–chalcogen disulfides oxy/thio/selenosulfonates; 4) C–S tri/difluoromethylated sulfinates, acetylenic triflones, arylsulfonium salts; 5) C–X (X = halogen) halides; 6) acceptors. Through providing theoretical backgrounds along comprehensive overview currently employed acceptors, photosensitizers, contemporary EnT-induced compounds, aims serve an invaluable resource future innovations rapidly

Язык: Английский

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Visible-Light-Induced Radical Difluoromethylation/Cyclization of Unactivated Alkenes: Access to CF₂H-Substituted Quinazolinones

Organic Letters, Год журнала: 2021, Номер 23(20), С. 7787 - 7791

Опубликована: Сен. 28, 2021

A mild and efficient visible-light-induced radical difluoromethylation/cyclization of unactivated alkenes toward the synthesis substituted quinazolinones with easily accessible difluoromethyltriphenylphosphonium bromide has been developed. The transformation advantages wide functional group compatibility, a broad substrate scope, operational simplicity. benign protocol offers facile access to pharmaceutically valuable difluoromethylated polycyclic quinazolinones.

Язык: Английский

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Photoinduced homolytic decarboxylative acylation/cyclization of unactivated alkenes with α-keto acid under external oxidant and photocatalyst free conditions: access to quinazolinone derivatives

Chemical Communications, Год журнала: 2021, Номер 57(49), С. 6050 - 6053

Опубликована: Янв. 1, 2021

A green and efficient strategy for the synthesis of quinazolinone derivatives via photo-induced decarboxylative cascade radical acylation/cyclization unactivated alkenes has been developed under oxidant photocatalyst free conditions.

Язык: Английский

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Visible‐Light Photosynthesis of CHF₂/CClF₂/CBrF₂‐Substituted Ring‐fused Quinazolinones in Dimethyl Carbonate

Chemistry - An Asian Journal, Год журнала: 2021, Номер 17(1)

Опубликована: Ноя. 26, 2021

With eco-friendly and sustainable CO2 -derived dimethyl carbonate as the sole solvent, visible-light-induced cascade radical reactions have been established a green efficient tool for constructing various CHF2 /CClF2 /CBrF2 -substituted ring-fused quinazolinones.

Язык: Английский

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A combination of heterogeneous catalysis and photocatalysis for the olefination of quinoxalin-2(1H)-ones with ketones in water: a green and efficient route to (Z)-enaminones

Green Chemistry, Год журнала: 2021, Номер 23(5), С. 2123 - 2129

Опубликована: Янв. 1, 2021

This study describes a novel aqueous reaction for the synthesis of (Z)-enaminones through combination heterogeneous catalysis and photocatalysis.

Язык: Английский

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Radical Polychloromethylation/Cyclization of Unactivated Alkenes: Access to Polychloromethyl‐Substituted Ring‐Fused Quinazolinones

Advanced Synthesis & Catalysis, Год журнала: 2022, Номер 364(6), С. 1085 - 1090

Опубликована: Фев. 10, 2022

Abstract A radical di‐ and trichloromethylation/cyclization of unactivated alkenes was developed with commercially available dichloromethane chloroform as di‐and trichloromethyl sources under metal‐free conditions. Variously substituted trichloromethylated pyrrolo‐ piperidino‐quinazolinones were obtained in 47–94% yields. Additionally, dibromomethylation/cyclization also achieved standard conditions when CH 2 Br utilized. Moreover, the dichloromethylated product can be transformed into 1′ H ‐spiro[cyclopropane‐1,3′‐pyrrolo[2,1‐ b ]quinazolin]‐9′(2′ )‐one after treating by KOH. magnified image

Язык: Английский

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