GRAPHICS The palladium-catalyzed coupling reaction of potassium alkenyltrifluoroborates with aryl or alkenyl halides or triflates proceeds readily with good yields. The trifluoroborates are air- and moisture-stable solids that can be stored indefinitely. The cross-coupling can be effected using PdCl2(dppf).CH2Cl2 as the catalyst in n-PrOH in the presence of Et3N. A variety of functional groups are tolerated.
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