Diels‐Alder Reaction Mechanisms of La@C60 and Gd@C60 Studied Using Density Functional Theory DOI
Cheng‐Xing Cui,

Jun‐Ru He,

Lingbo Qu

и другие.

Chemistry - A European Journal, Год журнала: 2024, Номер 30(66)

Опубликована: Авг. 22, 2024

Encapsulation of transition metals represents a crucial method for modifying the electronic structure and regulating reactivity fullerene, thereby expanding its applications. Herein, we present calculations with density functional theory methods to investigate mechanisms Diels-Alder (DA) reactions cyclopentadiene La@C

Язык: Английский

Multimodal Acridine Photocatalysis Enables Direct Access to Thiols from Carboxylic Acids and Elemental Sulfur DOI

Arka Porey,

Seth O. Fremin, Sachchida Nand

и другие.

ACS Catalysis, Год журнала: 2024, Номер 14(9), С. 6973 - 6980

Опубликована: Апрель 19, 2024

Development of photocatalytic systems that facilitate mechanistically divergent steps in complex catalytic manifolds by distinct activation modes can enable previously inaccessible synthetic transformations. However, multimodal remain understudied, impeding their implementation methodology. We report herein a access to thiols directly merges the structural diversity carboxylic acids with ready availability elemental sulfur without substrate preactivation. The transformation provides direct radical-mediated segue one most biologically important and synthetically versatile organosulfur functionalities, whose accessibility remains largely dominated two-electron-mediated processes based on toxic uneconomical reagents precursors. two-phase radical process is facilitated reactivity acridine photocatalysis enables both singlet excited state PCET-mediated decarboxylative carbon–sulfur bond formation unknown reductive disulfur cleavage photoinduced hydrogen atom transfer silane–triplet system. study points significant potential providing unexplored directions

Язык: Английский

Процитировано

11

N-Protonated Acridinium Catalyst Enables Anti-Markovnikov Hydration of Unconjugated Tri- and Disubstituted Olefins DOI Creative Commons

Boris A. van der Worp,

Tobias Ritter

Journal of the American Chemical Society, Год журнала: 2025, Номер 147(6), С. 4736 - 4742

Опубликована: Янв. 31, 2025

The preparation of alcohols with anti-Markovnikov selectivity directly from olefins and water is a sought-after reaction due to its atom-economy potential cost-effectiveness. Herein, we present the first general method for direct, catalytic hydration unconjugated tri- disubstituted olefins. key advancement made possible by an oxidative (E*red = 2.15 V) N-H acridinium catalyst, which allowed functionalization alkenes that were previously unreactive in such transformations their high oxidation potential. developed protocol not limited but also enables other hydrofunctionalizations, as hydroetherifications, following same mechanistic pathway.

Язык: Английский

Процитировано

1

A Photo- and Cobalt-Catalyzed Highly Selective and Divergent Hydrofunctionalization of 1,3-Dienes with Phenols DOI Creative Commons
Yue Wang, Jun Miao, Honglin Dong

и другие.

Chemical Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

An applicable cobalt-hydride-mediated selective, divergent hydroetherification and sequential hydroetherification/hydroarylation of 1,3-dienes with simple phenol feedstocks under a photoredox cobalt catalytic system have been developed. A variety allyl aryl ethers value-added chroman derivatives can be obtained in good to excellent yields stereoselectivity. This method not only obviates the need for extra hydrosilanes stoichiometric oxidants, thereby offering exceedingly mild conditions alkene hydroetherification, but also represents first case CoH-HAT-catalyzed double hydrofunctionalization alkenes sole nucleophile. The continuous selective bond-forming expands applications cobalt-hydride MHAT reaction provides novel approach design synthesis heterocyclic molecules.

Язык: Английский

Процитировано

1

Photocatalytic Decarboxylative Alkylation of Cyclic Imine–BF3 Complexes: A Modular Route to Functionalized Azacycles DOI
Kamal Bhatt,

Alafate Adili,

Andrew Tran

и другие.

Journal of the American Chemical Society, Год журнала: 2024, Номер unknown

Опубликована: Сен. 12, 2024

Alkyl radicals generated via an acridine photocatalyzed decarboxylation reaction of feedstock carboxylic acids engage with a range cyclic imine-BF

Язык: Английский

Процитировано

5

Copper‐Catalyzed Aromatization‐Driven Ring‐Opening Amination and Oxygenation of Spiro Dihydroquinazolinones DOI Open Access
Wenke Li,

Hong-Jie Miao,

Jinhua Zhang

и другие.

Chemistry - A European Journal, Год журнала: 2024, Номер 30(58)

Опубликована: Авг. 8, 2024

Abstract Mild and inexpensive copper‐catalyzed aromatization‐driven ring‐opening amination oxygenation of spiro dihydroquinazolinones are presented, respectively. These protocols provide facile atom‐economical access to the aminated carbonyl‐containing quinazolin‐4(3 H )‐ones in good yields with functional group compatibility, which difficult obtain by conventional methods. Remarkably, a telescoped procedure involving condensation ring‐opening/functionalization for simple cycloalkanone was found be accessible. Mechanistic studies suggest radical pathway this transformation.

Язык: Английский

Процитировано

3

Regioselective 1,4-Hydroamination of 1,3-Dienes by Photoredox/Cobalt Dual Catalysis DOI

Pei-Ting Li,

Quansheng Mou, Wei Yu

и другие.

Organic Letters, Год журнала: 2025, Номер unknown

Опубликована: Фев. 14, 2025

Herein, we report a visible-light-driven and cobalt-mediated 1,4-hydroamination reaction of 1,3-dienes with arylmines as the nucleophiles. The involves regioselective addition [CoIII]–H to 1,3-diene, followed by oxidation nucleophilic substitution amines. Using Ir(ppy)3 photocatalyst enables cobalt redox cycle be implemented without using an external oxidant hydride regent. This protocol can applied well forge carbon–oxygen carbon–sulfur bonds in analogous way.

Язык: Английский

Процитировано

0

Blue light-induced 1,4-aminoalkylation of 1,3-dienes enabled by N-heterocyclic carbene-Ir(III) catalysis DOI
Qilong Chen, Lebao Mao, Yifan Pan

и другие.

Chem Catalysis, Год журнала: 2025, Номер unknown, С. 101414 - 101414

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

0

Multimodal Acridine Photocatalysis Enables Direct Access to Thiols from Carboxylic Acids and Elemental Sulfur DOI Creative Commons

Arka Porey,

Seth O. Fremin, Sachchida Nand

и другие.

Опубликована: Фев. 29, 2024

Development of photocatalytic systems that facilitate mechanistically different steps in complex catalytic manifolds by distinct activation modes can enable previously inaccessible synthetic transformations. However, multimodal remain understudied, impeding their implementation methodology. We report herein a access to thiols directly merges the structural diversity carboxylic acids with ready availability elemental sulfur without substrate preactivation. The transformation provides direct radical-mediated segue one most biologically important and synthetically versatile organosulfur functionalities, whose accessibility remains largely dominated two-electron-mediated processes based on toxic uneconomical reagents precursors. two-phase radical process is facilitated reactivity acridine photocatalysis enables both singlet excited state PCET-mediated decarboxylative carbon–sulfur bond formation unknown reductive disulfur cleavage photoinduced HAT silane–triplet system. study points significant potential providing new directions

Язык: Английский

Процитировано

2

Visible light-driven decarboxylative alkylation of azomethine imines with carboxylic acids DOI

Zakhar M. Rubanov,

Mikhail D. Kosobokov, Vitalij V. Levin

и другие.

Mendeleev Communications, Год журнала: 2024, Номер 34(5), С. 673 - 675

Опубликована: Сен. 1, 2024

Язык: Английский

Процитировано

2

Visible-light-induced Synthesis of Organic Peroxides via Decarboxylative Couplings of Carboxylic Acids, Alkenes and tert-Butyl Hydroperoxide DOI

Qiuwei Huang,

Chenhao Lou,

Leiyang Lv

и другие.

Chemical Research in Chinese Universities, Год журнала: 2024, Номер unknown

Опубликована: Авг. 29, 2024

Язык: Английский

Процитировано

1