Title:Microwave-assisted, Copper-free Sonogashira Coupling Between Aryl
Halides and Terminal Alkynes Using Recyclable Ionic Liquid and Catalyst
Volume: 19
Issue: 1
Author(s): Dau Xuan Duc*Nguyen Van Quoc
Affiliation:
- Department of Chemistry, Institute of Natural Education Sciences, Vinh University, Vinh City, Vietnam
Keywords:
Coupling reaction, terminal alkynes, ionic liquid, microwave, trimethylsillylacetylene, iodide.
Abstract: An efficient method for the Sonogashira coupling reaction between aryl halides and terminal
alkynes has been developed. The reaction was performed in ionic liquid 1-butyl-3-
methylimidazolium tetrafluoroborate ([Bmim][BF4]) under microwave irradiation. High yields of
products were obtained in a very short reaction time. Moreover, the medium and catalyst could be
recovered and reused three times without considerable decrease in reaction yields.