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Abstract
Background: 2-oxazolines and 2-thiazolines are important heterocycles due to their extensive applications in chemistry, biochemistry, and pharmacology. Most of the precedent methods for preparing these heterocycles involve one or more drawbacks, including harsh reaction conditions, long reaction times, low yields of products, high temperature, and toxic solvents.
Objective: The aim of this study was to develop a new and eco-efficient method for the preparation of 2-oxazolines and 2-thiazolines.
Methods: Amino alcohols were condensed with nitriles in a sealed tube under solvent-free and metal- free conditions.
Results: Our procedure appears to be highly eco-efficient and promotes quantitative access to 2-oxazolines and 2-thiazolines using simple and minimum manipulation.
Conclusion: This simple approach allows high conversion for different nitriles yielded from 78 to 99% and easy isolation of the targeted products without further purification. To the best of our knowledge, our procedure is the most efficient and fast method reported to date in terms of chemical yields, number of steps, and atom economy.
Keywords: Green chemistry, 2-thiazolines, 2-oxazolines, sealed tube, solvent-free, metal-free.
Current Organocatalysis
Title:Efficacious One-pot Synthesis of 2-thiazolines and 2-oxazolines Under Solvent and Metal-Free Conditions
Volume: 8 Issue: 3
Author(s): Wassima Talbi , Jamil Kraiem*, Yakdhane Kacem , Jérôme Marrot and Sylvain Marque *
Affiliation:
- Laboratoire de Developpement Chimique, Galenique et Pharmacologique des Medicaments (LR12ES09), Universite de Monastir, Faculte de Pharmacie de Monastir, Rue Avicenne, 5000, Monastir,Tunisia
- Universite Versailles Saint- Quentin-en-Yvelines, Institut Lavoisier de Versailles (ILV), UMR CNRS 8180, 45 avenue des Etats-Unis, 78 035 Versailles Cedex,France
Keywords: Green chemistry, 2-thiazolines, 2-oxazolines, sealed tube, solvent-free, metal-free.
Abstract:
Background: 2-oxazolines and 2-thiazolines are important heterocycles due to their extensive applications in chemistry, biochemistry, and pharmacology. Most of the precedent methods for preparing these heterocycles involve one or more drawbacks, including harsh reaction conditions, long reaction times, low yields of products, high temperature, and toxic solvents.
Objective: The aim of this study was to develop a new and eco-efficient method for the preparation of 2-oxazolines and 2-thiazolines.
Methods: Amino alcohols were condensed with nitriles in a sealed tube under solvent-free and metal- free conditions.
Results: Our procedure appears to be highly eco-efficient and promotes quantitative access to 2-oxazolines and 2-thiazolines using simple and minimum manipulation.
Conclusion: This simple approach allows high conversion for different nitriles yielded from 78 to 99% and easy isolation of the targeted products without further purification. To the best of our knowledge, our procedure is the most efficient and fast method reported to date in terms of chemical yields, number of steps, and atom economy.
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Cite this article as:
Talbi Wassima , Kraiem Jamil *, Kacem Yakdhane , Marrot Jérôme and Marque Sylvain *, Efficacious One-pot Synthesis of 2-thiazolines and 2-oxazolines Under Solvent and Metal-Free Conditions, Current Organocatalysis 2021; 8 (3) . https://dx.doi.org/10.2174/2213337208666210402130444
DOI https://dx.doi.org/10.2174/2213337208666210402130444 |
Print ISSN 2213-3372 |
Publisher Name Bentham Science Publisher |
Online ISSN 2213-3380 |
Call for Papers in Thematic Issues
Impact of Organocatalysis on Homogeneous and Heterogeneous Catalytic Organic Synthesis: Recent Advances and Developments
Catalysis is vital in improving the reaction time, conversion, selectivity, and yield of organic and biological reactions. Heterogeneous and homogeneous catalysis have developed many types of catalysts to perform different organic and industrial reactions. In recent decades, researchers have tried to perform the reactions in a greener and more sustainable ...read more
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