Zeolite-Y-Mediated Multicomponent Reaction of Isatins, Cyclic 1,3-Diketones, and 1,2-Phenylenediamine: Easy Access to Spirodibenzo[1,4]diazepines

摘要

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 N-2-adsorption analysis. We used X-ray photoelectron spectroscopy to investigate the electronic environment and oxidation state of the elements.