Chemistry Letters, Vol.40, No.9, 925-927, 2011
Copper-free Sonogashira Coupling Reaction Using a trans-Spanning 1,2-Bis(2-thienylethynyl)benzene Ligand
Novel copper-free Sonogashira coupling reaction of aryl halides with terminal acetylenes proceeded in the presence of 1,2-bis(2-thienylethynyl)benzene (1) as a trans-bidentatable ligand.