Ferrocene/air double-mediated FeTiO₃-photocatalyzed semi-heterogeneous annulation of quinoxalin-2(1H)-ones in EtOH/H₂O

Chemical Communications, Journal Year: 2023, Volume and Issue: 59(94), P. 14029 - 14032

Published: Jan. 1, 2023

With both ferrocene and air as the redox catalysts, for first time, low-cost natural ilmenite (FeTiO3) was successfully used photocatalytic bond formations. Under assistance of a traceless H-bond, HCHO methylene reagent, variety imidazo[1,5-a]quinoxalinones were semi-heterogeneously photosynthesized in high yields with good functional group compatibility.

Language: Английский

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Room temperature synthesis of β-ketonitriles catalyzed by metal–organic framework supported Pd nanoparticles

Journal of Catalysis, Journal Year: 2024, Volume and Issue: 430, P. 115308 - 115308

Published: Jan. 21, 2024

Language: Английский

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Paired Electrolysis-Enabled Arylation of Quinoxalin-2(1H)-ones

The Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: 89(9), P. 6117 - 6125

Published: April 24, 2024

The first paired electrolysis-enabled arylation of quinoxalin-2(1H)-ones was achieved using cyanoarenes as the reagents. A variety 3-arylquinoxalin-2(1H)-ones with various important functional groups were obtained in moderate to good yields under metal- and chemical oxidant-free conditions. With a pair reductive oxidative processes occurring among substrates reaction intermediates, power consumption can be dramatically reduced.

Language: Английский

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Merging Photoinduced Electron Transfer with Hydrogen Atom Transfer: Formal β-C(sp³)–H Pyridination of Carbonyls

The Journal of Organic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

In this study, a novel approach that combines photoinduced electron transfer (ET) with hydrogen atom (HAT) has been introduced for the selective β-C(sp3)–H pyridination of carbonyl compounds. This method is notable its absence transition metals and ability to function under benign reaction conditions, resulting in range pyridinated derivatives consistently moderate good yields. The significance technique further underscored by potential late-stage functionalization pharmaceutically significant molecules. Mechanistic investigations confirmed proceeds via radical-mediated pathway.

Language: Английский

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Recent Advances in Green Multi-Component Reactions for Heterocyclic Compound Construction

Organic & Biomolecular Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This review highlights the recent advances in multi-component reactions for synthesizing heterocyclic compounds via green approaches including photoredox catalysis, electrochemical activation, catalyst-free methods and use of water as sole solvent.

Language: Английский

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“Alkene-to-Alkene” Difunctionalization of Enaminones for the Synthesis of Polyfunctionalized Alkenes by Transition-Metal-Free C–H and C–N Bond Transformation

Organic Letters, Journal Year: 2023, Volume and Issue: 25(47), P. 8451 - 8456

Published: Nov. 16, 2023

The three-component reactions of enaminones, disulfides, and alcohols for the synthesis polyfunctionalized alkenes have been realized via C-H C-N bond transformation on enaminones. proceed in a novel "alkene-to-alkene" difunctionalization mode without using any transition metal. application alkene products divergent sulfenyl heteroaryls, including sulfenylated pyrazoles, pyrimidines, isoxazoles, simple annulation has also verified.

Language: Английский

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Photocatalyst/metal-free sequential C–N/C–S bond formation: Synthesis of S-arylisothioureas via photoinduced EDA complex activation

Chinese Chemical Letters, Journal Year: 2024, Volume and Issue: 35(11), P. 110024 - 110024

Published: May 17, 2024

Language: Английский

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Transition metal-free tunable synthesis of 3-(trifluoromethylthio) and 3-trifluoromethylsulfinyl chromones via domino C-H functionalization and chromone annulation of enaminones

Chinese Chemical Letters, Journal Year: 2024, Volume and Issue: 35(11), P. 109683 - 109683

Published: March 2, 2024

Language: Английский

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NPh₃-Mediated WO₃-Photocatalyzed Semiheterogeneous Hydroxylation of Aryl and Alkyl Boronic Acids

The Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: 89(15), P. 10654 - 10659

Published: July 17, 2024

With an inexpensive and commercially available WO

Language: Английский

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Electrochemical Multicomponent Cascade Reaction for the Synthesis of Selenazol-2-amines with Elemental Selenium

The Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: 89(6), P. 4113 - 4119

Published: March 6, 2024

The first example of an electrochemical multicomponent synthesis selenium-containing compounds with inexpensive and abundant elemental selenium as the selenating reagent was developed. A variety selenazol-2-amines were constructed in high yields good functional group tolerance under metal-free chemical oxidant-free conditions.

Language: Английский

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