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.
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