Zirconia‐Supported Cu(I)‐Stabilized Copper Oxide Mesoporous Catalyst for the Synthesis of Quinazolinones Under Ambient Conditions

Abstract

Although there are many reports on the synthesis of quinazolinones, the use of high boiling solvents and high temperature restricts their scale-upt ot he industrial level. The current research reveals as imple protocolf or the catalytic synthesis of quinazolines in the presence of a cost-effective and reusable mesoporous ZrO 2 -supported Cu 2 O( Cu 2 ZrO 3 )c atalyst. The catalyst was prepared by simple co-precipitation and characterized using techniques like XRD, TGA, BET,S EM and TEM. The catalyst was reused for five cycles without significant loss in the activity and the catalyst was truly heterogeneous. The present synthesis utilizes environmentally benign H 2 O 2 as an oxidant. The present protocol showed good tolerance for various substituted aldehydes and good yields for quinazolinone derivatives. The methodf ollowed as imple workup procedure and no column chromatography was needed.Scheme1.Quinazolinone synthesis a)Anthranilamide with aromatic ketones. b)Anthranilamide with aromatic halides. c)Anthranilamide with aldehydes under mild conditions.[a] L. Parashuram Supporting information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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