Anchored ferrocene based heterogeneous electrocatalyst for the synthesis of benzimidazoles

Title

Anchored ferrocene based heterogeneous electrocatalyst for the synthesis of benzimidazoles

Creator

Thadathil D.A.; M B.; Varghese A.; Ghosh M.

Description

A facile and sustainable electrochemical synthetic strategy for phenyl benzimidazoles has been developed using a ferrocene-based electrocatalyst anchored on Toray carbon paper (TCP) coated with conducting polymeric film. The developed electrode was used for the electrochemical dehydrogenative cyclization reaction of o-phenylene diamine and benzaldehyde using lithium perchlorate/acetonitrile as electrolyte. The surface characteristic properties of the developed electrode were characterized by FESEM, Optical profilometer and X-ray photoelectron spectroscopy. Electron transfer mechanism of the anchored ferrocene-based electrocatalyst was thoroughly studied. To determine the efficacy of the catalyst, the electron transfer coefficient (0.5) and apparent rate constant 41.4 s?1 were determined. The cyclic voltammetry studies reveal that the electrochemical oxidation peak for the synthesis of benzimidazole occurs at 0.48 V. The formation of the product was confirmed by Gas chromatography and Nuclear Magnetic Resonance spectroscopy. A comparison chart is presented for the green metrics and sustainability of the present strategy with other electrochemical approach. 2022 Elsevier Ltd

Source

Electrochimica Acta, Vol-435

Date

2022-01-01

Publisher

Elsevier Ltd

Subject

Benzimidazole; Electrocatalysis; Ferrocene; Mediator-free; Oxidative cyclization

Coverage

Thadathil D.A., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Karnataka, Bengaluru, 560029, India; M B., Department of Chemistry, Ashoka University, Harayana, 131029, India; Varghese A., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Karnataka, Bengaluru, 560029, India; Ghosh M., Department of Chemistry, Ashoka University, Harayana, 131029, India

Rights

Restricted Access

Relation

ISSN: 134686; CODEN: ELCAA

Format

Online

Language

English

Type

Article

Identifier

https://doi.org/10.1016/j.electacta.2022.141399

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