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Ultrasound/visible light-mediated synthesis of N-heterocycles using g-C3N4/Cu3TiO4 as sonophotocatalyst
M. Arunachalapandi,
Published in Springer Science and Business Media B.V.
2021
Abstract
In this investigation, novel g-C3N4/Cu3TiO4 (CNCT) nanocomposite was synthesized by using a simple thermal condensation method. The synthesized CNCT nanocomposite was characterized by X-ray Diffraction, Transmission electron microscopy, Atomic force microscopy, Energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, UV–vis diffuse reflectance spectroscopy, Photoluminescence, Brunauer–Emmett–Telle, Zeta Potential, and Thermogravimetric analysis. The study revealed that the catalysts prepared have high crystalline nature, optical light-absorbing property, high surface area, and stability. The CNCT- nanocomposite was found to be an extraordinary visible light absorbing catalyst for the synthesis of quinoxaline and quinazolinone derivatives, which have important benefits in a variety of drug applications. Quinoxaline and quinazolinones were prepared from anthranilamide, diamines, benzil, and corresponding aldehydes under Ultrasonic/visible light-medium with a notable amount of g-C3N4/Cu3TiO4. The results exhibit good and excellent yields of product derivatives at mild conditions under Ultrasonic/visible light-medium. Ultrasounds always clean the active site catalyst, promoting activity and reusability. Most notably, with preserved reactivities, this heterogeneous g-C3N4/Cu3TiO4 composite can be used atleast 5 times. Furthermore, we examined the reusability of the catalyst under Ultrasonication coupled with Visible light and in the absence of an Ultrasonication medium. Finally, advantages of the method are non-conventional approach, green solvent, reduced reaction duration, mild condition, and reusable catalyst. © 2021, The Author(s), under exclusive licence to Springer Nature B.V.
About the journal
JournalData powered by TypesetResearch on Chemical Intermediates
PublisherData powered by TypesetSpringer Science and Business Media B.V.
ISSN09226168