Cu/Cu2O@g‐C3N4: Recyclable Photocatalyst under Visible Light to Access 2‐Aryl‐/benzimidazoles/benzothiazoles in Water. Issue 45 (1st December 2020)

• Record Type: Journal Article
• Authors: Singh, Puneet K.; Bhardiya, Smita R.; Asati, Ambika; Rai, Vijai K.; Singh, Manorama; Rai, Ankita
• Is Part Of: ChemistrySelect. Volume 5:Issue 45(2020)
• Page Start: 14270
• Page End: 14275
• Publication Date: 2020-12-01
• Subjects: Carbon nitrides -- Benzimidazoles -- Benzothiazoles -- Photocatalytic -- o-Phenylenediamine -- Aqueous medium; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202003812
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: An unprecedented Cu/Cu2 O@g‐C3 N4 catalysed visible light driven green synthesis of 2‐aryl‐/benzimidazoles and benzothiazoles is reported via condensation of structurally different aldehydes with o ‐phenylenediamine and o ‐aminothiophenol respectively. Herein, Synergistic catalysis is operating as both Cu/Cu2 O@g‐C3 N4 and visible‐light condition are required, no product was isolated in absence of either. Operational simplicity, ambient reaction conditions, aqueous medium, good yield of products (80–94 %) and recyclability of the catalyst without any loss in catalytic efficiency and selectivity are salient features of the envisaged protocol. Abstract : A green protocol for synthesis of benzimidazoles and benzothiazoles using structurally different aldehydes in the presence of visible light is reported at room temperature. Operational simplicity, ambient reaction conditions, aqueous medium, good yield of products (80–94%) and recyclability of the catalyst without any loss in catalytic efficiency and selectivity are salient features of the envisaged protocol.