Electron transfer-induced reduction of organic halides with amines

Chemical Communications, Год журнала: 2018, Номер 54(44), С. 5582 - 5585

Опубликована: Янв. 1, 2018

UV light-induced reduction of vinyl and aryl halides with triethylamine proceeded smoothly to give the corresponding reduced products. High temperature heating also caused DABCO served as a good reducing reagent.

Язык: Английский

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Progress in Visible Light‐Induced Difluroalkylation of Olefins

The Chemical Record, Год журнала: 2020, Номер 21(1), С. 69 - 86

Опубликована: Окт. 27, 2020

Abstract The incorporation of difluoromethylated (CF 2 ) moiety into potentially useful parent molecules lead to significant changes in metabolic stability, lipophilicity, and solubility the molecules. Over past several years, with advent new difluoromethylating reagents, great progress has been made development a protocol for direct CF H group organic Among them, difluroalkylation induced by visible light emerged as an efficient strategy over few years. In particular, this provides more sustainable alternative other traditional radical‐triggered reactions terms environment, energy, step‐economy, health, safety. present review mainly focuses on photocatalytic difluoroalkylation olefinic using transition‐metal complexes, dyes photocatalyst; some compounds medium photocatalysis.

Язык: Английский

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Subphthalocyanine capsules: molecular reactors for photoredox transformations of fullerenes

Chemical Science, Год журнала: 2022, Номер 13(32), С. 9249 - 9255

Опубликована: Янв. 1, 2022

The internal cavity formed by a dimeric subphthalocyanine (SubPc) capsule (SubPc2Pd3, 2), ensembled coordination of pyridyl substituents in the monomeric SubPc 1 to Pd centers, has proved an optimal space for complexation C60 fullerene. Taking advantage intense absorption green light component at around 550 nm, we have tested different green-light induced photoredox addition reactions over double bonds guest C60. Both amine radicals, generated reductive quenching excited state 2 aromatic trimethylsilylamines, and trifluoroethyl obtained from oxidative photosensitizer, successfully taken place with good yields 2:C60 host:guest complex. On other hand, both result much lower when pyridyl-SubPc is used as photocatalyst, demonstrating that encapsulation results strong acceleration reaction. Importantly, this first example use confined microenvironment trigger chemical transformations fullerenes.

Язык: Английский

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Visible‐Light‐Promoted Synthesis of 1,4‐Dicarbonyl Compounds via Conjugate Addition of Aroyl Chlorides

Chemistry - An Asian Journal, Год журнала: 2018, Номер 13(3), С. 271 - 274

Опубликована: Янв. 10, 2018

A facile visible-light photocatalytic conjugate addition to prepare 1,4-dicarbonyl compounds has been developed by employing readily available aroyl chlorides as aryl radical sources. This operationally simple method shows a broad scope with regard both and Michael acceptors. As result, variety of 1,4-diketones were efficiently synthesized in moderate good yields.

Язык: Английский

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Synthesis of Elongated Esters from Alkenes

Angewandte Chemie International Edition, Год журнала: 2018, Номер 57(47), С. 15455 - 15459

Опубликована: Сен. 28, 2018

A convenient method for synthesizing elongated aliphatic esters from alkenes is reported. An (alkoxycarbonyl)methyl radical species generated upon visible-light irradiation of an ester-stabilized phosphorus ylide in the presence a photoredox catalyst. This adds onto carbon-carbon double bond alkene to produce ester.

Язык: Английский

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