Abstract
The last decade has witnessed a tremendous increase of the studies concerning [3+2] cycloaddition reactions of azides and alkynes. The recent discovery of copper(I) species as efficient catalysts for this transformation is at the origin of this true explosion. In contrast with classical thermal reactions, copper catalysis leads to the regioselective formation of 1,4-disubstituted 1,2,3-triazoles in high yields and under simple reaction conditions. This transformation has indeed become the most prominent example of the principles of Click chemistry, postulated in 2001 by Sharpless and co-workers.
Despite the ever-increasing interest in this process, the use of ligands in this context remains minor when compared to ligandless systems. Nevertheless, besides overcoming the inherent limitations of ligandless systems, the use of ligands in this context has been shown to increase and, more importantly, modulate the catalytic activity of the metal center. Herein, the catalytic activities of ligated copper systems are reviewed in a way intended inspirational for future developments in this field.
Keywords: Alkyne, azide, click, copper, cycloaddition, ligand, cycloaddition reactions, regioselective formation, carbon, –, heteroatom bond, stereospecifity, coppercatalyzed azide-alkyne cycloaddion (CuAAC), Amine Ligands, Nitrogen-Based Ligands, N(sp2)-Type Ligands, PHOSPHORUS-BASED LIGANDS
Current Organic Chemistry
Title: The Use of Ligands in Copper-Catalyzed [3+2] Azide-Alkyne Cycloaddition: Clicker than Click Chemistry?
Volume: 15 Issue: 16
Author(s): Silvia Diez-Gonzalez
Affiliation:
Keywords: Alkyne, azide, click, copper, cycloaddition, ligand, cycloaddition reactions, regioselective formation, carbon, –, heteroatom bond, stereospecifity, coppercatalyzed azide-alkyne cycloaddion (CuAAC), Amine Ligands, Nitrogen-Based Ligands, N(sp2)-Type Ligands, PHOSPHORUS-BASED LIGANDS
Abstract: The last decade has witnessed a tremendous increase of the studies concerning [3+2] cycloaddition reactions of azides and alkynes. The recent discovery of copper(I) species as efficient catalysts for this transformation is at the origin of this true explosion. In contrast with classical thermal reactions, copper catalysis leads to the regioselective formation of 1,4-disubstituted 1,2,3-triazoles in high yields and under simple reaction conditions. This transformation has indeed become the most prominent example of the principles of Click chemistry, postulated in 2001 by Sharpless and co-workers.
Despite the ever-increasing interest in this process, the use of ligands in this context remains minor when compared to ligandless systems. Nevertheless, besides overcoming the inherent limitations of ligandless systems, the use of ligands in this context has been shown to increase and, more importantly, modulate the catalytic activity of the metal center. Herein, the catalytic activities of ligated copper systems are reviewed in a way intended inspirational for future developments in this field.
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Cite this article as:
Diez-Gonzalez Silvia, The Use of Ligands in Copper-Catalyzed [3+2] Azide-Alkyne Cycloaddition: Clicker than Click Chemistry?, Current Organic Chemistry 2011; 15 (16) . https://dx.doi.org/10.2174/138527211796378488
DOI https://dx.doi.org/10.2174/138527211796378488 |
Print ISSN 1385-2728 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5348 |
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