Volume 54, Issue 2 pp. 1486-1491
Article

N,N′-Dialkyl-4-Aryl-3,4-Dihydropyrimidinones and Thiones: Ceric Ammonium Nitrate Catalyzed Synthesis and Molecular Structure Determination by X-ray Crystallography

Chingrishon Kathing

Chingrishon Kathing

Centre for Advanced Studies in Chemistry, North-Eastern Hill University, Shillong, Meghalaya, 793022 India

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Sushil Kumar

Sushil Kumar

Department of Chemistry, University of Delhi, Delhi, 110007 India

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Shokip Tumtin

Shokip Tumtin

Department of Chemistry, Kirori Mal College, University of Delhi, Delhi, 110007 India

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Nongthombam Geetmani Singh

Nongthombam Geetmani Singh

Centre for Advanced Studies in Chemistry, North-Eastern Hill University, Shillong, Meghalaya, 793022 India

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Jims World Star Rani

Jims World Star Rani

Centre for Advanced Studies in Chemistry, North-Eastern Hill University, Shillong, Meghalaya, 793022 India

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Ridaphun Nongrum

Ridaphun Nongrum

Centre for Advanced Studies in Chemistry, North-Eastern Hill University, Shillong, Meghalaya, 793022 India

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Rishanlang Nongkhlaw

Corresponding Author

Rishanlang Nongkhlaw

Centre for Advanced Studies in Chemistry, North-Eastern Hill University, Shillong, Meghalaya, 793022 India

E-mail: [email protected]Search for more papers by this author
First published: 10 August 2016
Citations: 2

Abstract

This work presents a microwave assisted solvent-free synthesis of N,N′-dialkyl-4-aryl-3,4-dihydropyrimidinones/thiones in the presence of Ceric Ammonium Nitrate (CAN) via direct condensation of aromatic aldehydes, β-keto ester, and N,N′-dialkylurea/thiourea. The highlights of the methodology adopted are (i) facile condensation of the reactants into product without any side-products, and (ii) short reaction time with high yield and good purity. All the compounds synthesized were characterized and established by spectroscopic techniques such as FTIR, 1H NMR, 13C NMR, and Mass. The structure of the compound is further corroborated by single crystal X-ray diffraction analysis.

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