Synthesis of alkynyltrifluoroborates
The palladium-catalyzed cross-coupling reaction of potassium alkynyltrifluoroborates with aryl halides or triflates proceeds readily with moderate to excellent yields. The potassium alkynyltrifluoroborates are air- and moisture-stable crystalline solids that can be stored indefinitely, which will provide an advantage in applications to combinatorial chemistry.
G. A. Molander, B. W. Katona, F. Machrouhi, J. Org. Chem., 2002, 67, 8416-8423.