Facile and quick synthesis of 1-monosubstituted aryl 1,2,3-triazoles: a copper-free [3+2] cycloaddition
摘要:
An efficient copper-free synthesis of 1-monosubstituted aryl 1,2,3-triazoles from sodium acetylide and aryl azides was developed, which was found suitable for various aryl azides and completed within 15 min at room temperature with moderate to excellent yields. (C) 2010 Elsevier Ltd. All rights reserved.
The synthesis of 1-monosubstituted1,2,3-triazoles was achieved using azides and propiolicacid by copper-catalyzed clickcycloaddition/decarboxylation, which was easily carried out in N,N-dimethylformamide at room temperature or 60 ˚C with yields ranging from moderate to excellent. The reaction conditions were found to be successful for aryl and vinyl azide reactants, including analogues with various