Ternary ZnCo₂O₄ Nanowire Electrode Materials for High-Capacitance and Flexible Electrochemical Capacitors

ACS Applied Energy Materials, Journal Year: 2023, Volume and Issue: 6(18), P. 9594 - 9601

Published: Aug. 31, 2023

Spinel-structured oxides are promising candidates for supercapacitor electrodes owing to their features of low price and environmental friendliness. However, large-scale applications restricted in view energy density electrical conductivity. In this work, we synthesize wire-like ZnCo2O4 nanomaterials by a facile hydrothermal avenue subsequent calcination process. The prepared samples possess large specific surface area, which is beneficial increasing active sites shortening the ion diffusion channels. as-assembled asymmetric delivers an 64 Wh kg–1 at 2880 W kg–1. And capacitance can be maintained 85% after 10,000 cycles current 2 A g–1. device indicates excellent mechanical stability when bending various angles, revealing its potential application portable storage devices.

Language: Английский

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Electron Deficient Ir–O Bonds Promote Heterogeneous Ir-Catalyzed Anti-Markovnikov Hydroboration of Alkenes under Mild Neat Conditions

Nano Letters, Journal Year: 2024, Volume and Issue: 24(17), P. 5165 - 5173

Published: April 17, 2024

Tuning electronic characteristics of metal–ligand bonds based on reaction pathways to achieve efficient catalytic processes has been widely studied and proven be feasible in homogeneous catalysis, but it is scarcely investigated heterogeneous catalysis. Herein, we demonstrate the regulation configuration Ir–O an Ir single-atom catalyst according borane activation mechanism. Ir1/Ni(OH)x are found more electron-poor than those Ir1/NiOx. Despite mild solvent-free conditions ambient temperature, exhibits outstanding performance for hydroboration alkenes, furnishing desired alkylboronic esters with a turnover frequency value ≤3060 h–1 99% anti-Markovnikov selectivity, which significantly better that Ir1/NiOx (42 h–1). It further as active centers oxidative so benefit H–B bond reductive pinacolborane.

Language: Английский

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Metabolic engineering of Escherichia coli for the production of d-panthenol from 3-aminopropanol and glucose

Green Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The novel de novo biosynthesis of d -panthenol from glucose and 3-aminopropanol was realized in Escherichia coli for the first time.

Language: Английский

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Total synthesis of the assigned structure of (+)-Maneolactenol

Tetrahedron Chem, Journal Year: 2025, Volume and Issue: unknown, P. 100127 - 100127

Published: March 1, 2025

Language: Английский

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Metal-free highly chemo-selective bisphosphorylation and deoxyphosphorylation of carboxylic acids

Chemical Science, Journal Year: 2023, Volume and Issue: 14(20), P. 5519 - 5526

Published: Jan. 1, 2023

The bisphosphorylation and deoxyphosphorylation of carboxylic acids are achieved selectively under the metal-free reaction conditions. In addition, can be further transformed into alkenes by coupling with WHE ketones aldehydes.

Language: Английский

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Site-Selective Decarbonylative [4+2] Annulation of Carboxylic Acids with Terminal Alkynes by C–C/C–H Activation Strategy and Cluster Catalysis

Chemical Science, Journal Year: 2024, Volume and Issue: 15(48), P. 20346 - 20354

Published: Jan. 1, 2024

A highly site-selective decarbonylative [4 + 2] cyclization of carboxylic acids with terminal alkynes forming naphthalenes is enabled by palladium cluster catalysis.

Language: Английский

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Ruthenium-Catalyzed meta-Alkylation of (Hetero)aromatic Acids with Pyridinium Salts Utilizing Ubiquitous Amines as Substrates

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 3162 - 3172

Published: Feb. 6, 2025

Language: Английский

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Rapid and Scalable Synthesis of Oxazoles Directly from Carboxylic Acids

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

Published: March 5, 2025

A highly efficient and expedient method for the synthesis of 4,5-disubstituted oxazoles has been developed directly from carboxylic acids, employing a stoichiometric amount easy-to-access stable triflylpyridinium reagent. The overall transformation proceeds through formation an in situ generated acylpyridinium salt followed by trapping with isocyanoacetates tosylmethyl isocyanide. This broad substrate scope good functional group tolerance (including hindered less reactive substrates or those containing sensitive groups). versatility this newly reaction is illustrated its application gram-scale production FDA-approved prodrug 5-aminolevulinic acid (5-ALA) late-stage functionalization bioactive molecules including estrone, lipoic acid, valproic probenecid. Additionally, process features advantageous recovery reuse base DMAP, underscoring practical benefits.

Language: Английский

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Triflylpyridinium as Coupling Reagent for Rapid Amide and Ester Synthesis

Organic Letters, Journal Year: 2023, Volume and Issue: 25(24), P. 4571 - 4575

Published: June 8, 2023

An effective method has been developed to facilitate the synthesis of amides and esters at ambient temperature within 5 min, in which a stable easily accessible triflylpyridinium reagent is used. Remarkably, this not only wide range substrate compatibility but also could realize scalable peptide ester via continuous flow process. Moreover, excellent chirality retentions are presented during activation carboxylic acid.

Language: Английский

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Rapid and Practical Synthesis of gem‐Dibromoalkanes from Aldehydes by Tribromide Reagent

Chemistry - An Asian Journal, Journal Year: 2024, Volume and Issue: 19(5)

Published: Jan. 6, 2024

Abstract gem ‐Dibromoalkanes are important synthetic building block in organic chemistry, but their preparation is still troublesome. Herein, we have developed a simple and practical protocol for the synthesis of ‐dibromoalkanes from aldehydes using tetrabutylammonium tribromide triphenyl phosphite. A variety alkyl aromatic can be transformed into corresponding products within 10 minutes. This also applicable to alcohols, configuration chiral alcohol inverted during process with excellent enantiopurity.

Language: Английский

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