Volume 126, Issue 38 pp. 10319-10323
Zuschrift

A Metal-Free Three-Component Reaction for the Regioselective Synthesis of 1,4,5-Trisubstituted 1,2,3-Triazoles

Dr. Joice Thomas

Dr. Joice Thomas

Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven (Belgium)

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Dr. Jubi John

Dr. Jubi John

Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven (Belgium)

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Nikita Parekh

Nikita Parekh

Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven (Belgium)

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Prof. Dr. Wim Dehaen

Corresponding Author

Prof. Dr. Wim Dehaen

Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven (Belgium)

Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven (Belgium)Search for more papers by this author
First published: 02 July 2014
Citations: 41

We thank the University of Leuven and the FWO-Vlaanderen for financial support. The Erasmus Exchange program “Experts II” is acknowledged for a fellowship to N.P.

Abstract

A metal-free three-component reaction to synthesize 1,4,5-trisubstituted 1,2,3-triazoles from readily available building blocks, such as aldehydes, nitroalkanes, and organic azides, is described. The process is enabled by an organocatalyzed Knoevenagel condensation of the formyl group with the nitro compound, which is followed by the 1,3-dipolar cycloaddition of the azide to the activated alkene. The reaction features an excellent substrate scope, and the products are obtained with high yield and regioselectivity. This method can be utilized for the synthesis of fused triazole heterocycles and materials with several triazole moieties.

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