Alcohols as Alkyl Synthons Enabled by Photoredox-Catalyzed Deoxygenative Activation

ACS Catalysis, Год журнала: 2024, Номер 14(17), С. 13451 - 13496

Опубликована: Авг. 26, 2024

Alcohols are abundant with versatile structural variety and have ample use as pivotal functional groups in numerous organic processes. Because of their frequent occurrence enumerable natural products, bioactive molecules, medicinal components, alcohol functionalities provide a promising scope research to advance the operational diversity for improving clinical success. Recent years witnessed design modern C–C C–heteroatom bond-forming approaches easily accessible commercially available unactivated aliphatic alcohols native adaptive sp3 handles, hence offering groundbreaking transformative pathways functionalization complex molecular architectures. The judicial application appropriate activating generate alkyl radical from through C–O bond fragmentation employ it potential alkylating agent unfolds unique synthetic strategies, thereby replacing obvious requirement halides. This review elaborately discusses recent trends regarding using C(sp3)-centered various chemical transformations by exploiting different activation modes disrupter under photoredox catalysis. presentation is organized nature scaffolds, kind formation, progress achieved this domain since original discovery providing illustrative examples mechanistic details, focus on difficulties future prospects.

Язык: Английский

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Nucleophilic Substitution at Unactivated Arene C–H: Copper-Catalyzed anti-Selective Silylative Cyclization of Substituted Benzylacetylenes

Organic Letters, Год журнала: 2025, Номер unknown

Опубликована: Фев. 13, 2025

A new mode of carbon-carbon bond formation via electrophilic activation a C-H has been developed in the context copper-catalyzed anti-selective silylative cyclization benzylacetylenes with silylboronates for synthesis 2-silyl-1H-indenes. The reaction proceeds high regioselectivity various substituted benzylacetylenes, and resulting products could be further functionalized. arene that undergoes acts as an electrophile release hydride under redox neutral conditions, mechanism was probed by deuterium-labeling experiments density functional theory calculations.

Язык: Английский

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A Regioselective Ruthenium‐Catalyzed Oxidative C–H Alkenylation of 2‐Aryl‐4H‐Benzo[d][1,3] Oxazin‐4‐Ones

Applied Organometallic Chemistry, Год журнала: 2025, Номер 39(6)

Опубликована: Май 2, 2025

ABSTRACT 2‐Aryl‐ 4H ‐benzo[ d ][ 1 , 3 ]oxazin‐ 4 ‐one derivatives can be directly alkenylated with alkyl acrylates using a facile Ru (II)‐catalyzed process; Cu (OAc) 2 •H O as an oxidizer through formation of pentagon cyclic complex imine‐Ru (II) for C–H activation is described. The unique catalytic reaction well matched miscellaneous olefins such vinyl ketones, acrylonitrile, and acrylates. aryl rings bearing electronically diverse substituents tolerated the conditions to provide ortho‐alkenylation products in high regioselectivities admissible yields.

Язык: Английский

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The Comparison of Bioremediation and Nanoremediation and Their History Background

Опубликована: Янв. 1, 2025

Язык: Английский

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