Zeolite‐Y‐Mediated Multicomponent Reaction of Isatins, Cyclic 1, 3‐Diketones, and 1, 2‐Phenylenediamine: Easy Access to Spirodibenzo[1, 4]diazepines. Issue 3 (5th January 2018)

• Record Type: Journal Article
• Authors: De, Kajal; Bhanja, Piyali; Bhaumik, Asim; Mukhopadhyay, Chhanda
• Is Part Of: ChemCatChem. Volume 10:Issue 3(2018)
• Page Start: 590
• Page End: 600
• Publication Date: 2018-01-05
• Subjects: heterogeneous catalysis -- Mannich reaction -- multicomponent reactions -- nanoparticles -- zeolites; Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.201701487
• Languages: English
• ISSNs: 1867-3880

Abstract

Abstract: A facile and efficient one‐pot, three‐component approach for the synthesis of spirodibenzo[1, 4]diazepine derivatives has been achieved by the reaction of isatins, cyclic 1, 3‐diketones, and 1, 2‐phenylenediamines in the presence of a Zeolite‐Y nanopowder catalyst. The Zeolite‐Y nanopowder catalyst was synthesized and characterized thoroughly by using XRD, high‐resolution transmission electron microscopy, energy‐dispersive spectroscopy, and N2 ‐adsorption analysis. We used X‐ray photoelectron spectroscopy to investigate the electronic environment and oxidation state of the elements. Abstract : Spiralize : A new strategy towards the synthesis of biologically potent spirodibenzo[1, 4]diazepine derivatives using recyclable Zeolite‐Y as an effective acid catalyst is described. The Zeolite‐Y catalyst shows significant advantages over homogeneous catalysts, which include an easy work‐up and excellent reusability.