One-Step Synthesis of Dicyano Imidazoles by (NH4)2Ce(NO3)6/HNO3 Promoted Oxidative Cyclocondensation of an Aldehyde and 2,3-diaminomaleonitrile

Document Type : Research Article

Authors

Department of Organic Chemistry, Payame Noor University, P.O. Box 19395-4697 Tehran, I.R. IRAN

Abstract

The purpose of this study is to obtain a facile, mild, and effective synthetic method for the one-pot synthesis of 2-aryl-4,5-dicarbonitrile imidazole derivatives 3a-q from oxidative cyclo-condensation of aromatic aldehydes and 2,3-diaminomaleonitrile (DAMN) by cerium(IV) ammonium nitrate/nitric acid (CAN/NA) as a novel and efficient oxidation catalyst. This synthetic protocol is cost-effective in addition to other advantages such as rapid transformation with good to excellent yields of products, one-step process and avoiding the pre-functionalization of the starting materials, simple workup procedure and easy operation under mild conditions in comparison previously report. These valuable conditions may be ideally suited for an effective synthesis of dicyano imidazole heterocycles on a larger scale.

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Main Subjects

References

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Iranian Journal of Chemistry and Chemical Engineering
Volume 39, Issue 6 - Serial Number 104
November and December 2020
Pages 1-8

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