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Polycyclic Aromatic Compounds Volume 41, 2021 - Issue 7
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Research Articles

(NH4)2Ce(NO3)6/HNO3 as a High-Performance Oxidation Catalyst for the One-Step, Solvent-Free Synthesis of Dicyano Imidazoles

Mehdi KalhorDepartment of Chemistry, University of Payame Noor, Tehran, IranCorrespondence[email protected]
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,
Zahra SeyedzadeDepartment of Chemistry, University of Payame Noor, Tehran, IranView further author information
&
Zohre ZarnegarDepartment of Chemistry, University of Payame Noor, Tehran, IranView further author information
Pages 1506-1514 | Received 21 Sep 2018, Accepted 25 Oct 2019, Published online: 11 Nov 2019
 
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Abstract

The first one-pot, solvent-free methodology for preparing 2-aryl-4,5-dicarbonitrile imidazoles via the reaction of 2,3-diaminomaleonitrile with aromatic aldehydes in the presence of cerium (IV) ammonium nitrate/nitric acid (CAN/NA) as a novel and high-performance oxidation catalyst is reported. The salient features of the described process in comparison with previous methods include one-step process, easy isolation of products, higher purity and yields, milder and cleaner conditions, short reaction time, and convenient manipulation.

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Funding

We gratefully acknowledge the financial support from the Payame Noor University for supporting this work.

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