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Brønsted Acidic Ionic Liquid: An Efficient and ReusableCatalyst for the Multi-Component Synthesis ofDihydropyrimidinones under Solvent-Free Conditions

Publish place: Conference on the Organic Synthesis and Pharmaceutical Chemistry
Publish Year: 1392
Type: Conference paper
Language: English
View: 160

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Link to this Paper:
https://civilica.com/doc/1764599

Document National Code:

COSPC01_045

Index date: 20 September 2023

Brønsted Acidic Ionic Liquid: An Efficient and ReusableCatalyst for the Multi-Component Synthesis ofDihydropyrimidinones under Solvent-Free Conditions abstract

An efficient and convenient procedure for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones and thiones by condensation of 1,3-dicarbonylcompounds, Aromatic and aliphatic aldehydes, and urea or thiourea in the presence ofcatalytic amount of Brønsted acidic ionic liquid 3-methyl-1-sulfonic acid imidazoliumchloride {[Msim]Cl} under thermal solvent-free conditions reacted easily to afford thecorresponding 3,4-dihydropyrimidin-2(1H)-ones and thiones. Straightforward andclean workup, short reaction time, good to excellent yields and reusability of thecatalyst are the advantages of this method.

Brønsted Acidic Ionic Liquid: An Efficient and ReusableCatalyst for the Multi-Component Synthesis ofDihydropyrimidinones under Solvent-Free Conditions Keywords:

Dihydropyrimidinone , Ionic liquid , Brønsted acidic , reusable catalyst , thiourea

Brønsted Acidic Ionic Liquid: An Efficient and ReusableCatalyst for the Multi-Component Synthesis ofDihydropyrimidinones under Solvent-Free Conditions authors

Heshmatollah Alinezhad

Department of Organic Chemistry, Faculty of Chemistry, University ofMazandaran, Babolsar,Iran,

Neda Ghobadi

Department of Organic Chemistry, Faculty of Chemistry, University ofMazandaran, Babolsar,Iran,