Catalytic activity of dithioic acid copper complexes in the alkyne–azide cycloaddition
作者:Bayardo E. Velasco、Gustavo López-Téllez、Nelly González-Rivas、Iván García-Orozco、Erick Cuevas-Yañez
DOI:10.1139/cjc-2012-0325
日期:2013.4
Diverse dithioicacid copper complexes exhibit a high catalytic activity in the copper-catalyzed alkyne–azide cycloaddition using several solvents under different temperatures, showing a high efficiency with only 0.005 mmol catalyst/mmol alkyne or less. A dithioicacid copper complex derived from acetophenone was selected and used as the catalyst in the preparation of a library of 1,4-disubstituted-1
Ligand Synthesis Catalyst and Complex Metal Ion: Multicomponent Synthesis of 1,3-Bis(4-phenyl-[1,2,3]triazol-1-yl)-propan-2-ol Copper(I) Complex and Application in Copper-Catalyzed Alkyne-Azide Cycloaddition
A new bistriazole copper complex was synthesized by direct treatment of an alkyne, an azide, and CuI as copper salt through in situ ligand formation under a multicomponent reaction process. This complex was analyzed by XPS, TGA, DSC, and SEM techniques and revealed a triangular-shaped morphology, high thermal stability, and catalytic power in CuAAC reactions, requiring only 2.5% mol catalyst to afford
The Use of Glucose as Alternative Reducing Agent in Copper-Catalyzed Alkyne-Azide Cycloaddition
作者:Marco A. Garcia、Zita G. Rios、Jaime Gonzalez、Víctor M. Perez、Nancy Lara、Aydee Fuentes、Carlos Gonzalez、David Corona、Erick Cuevas-Yanez
DOI:10.2174/157017811799304232
日期:2011.12.1
1,2,3-triazoles were synthesized using several alkynes and azides as starting materials in the presence of glucose and catalytic amounts of Fehling reagent. This process is carried out under ambient pressure and temperature with good yields
Effect of temperature on triazole and bistriazole formation through copper-catalyzed alkyne–azide cycloaddition
作者:Jaime González、Víctor M. Pérez、David O. Jiménez、Germán Lopez-Valdez、David Corona、Erick Cuevas-Yañez
DOI:10.1016/j.tetlet.2011.05.002
日期:2011.7
Temperature is an important factor in the copper catalyzed alkyne azide cycloaddition under oxidative conditions. 1,2,3-Triazoles were obtained in high yields when several alkynes and azides were reacted at methanol reflux using catalytic amounts of both copper iodide and sodium hydroxide. On the other hand, bistriazoles were major products when reactions were performed at -35 degrees C using excess sodium hydroxide. (C) 2011 Elsevier Ltd. All rights reserved.