Abstract
Palladium-catalyzed decarboxylative coupling reactions using alkynoic acids and 1-fluoro-2,2-diiodovinylarenes provide mono- and dialkynylfluoroalkenes with high selectivity. When the reaction was conducted using DBU/DMSO, the hydrodeiodinated monoalkynylfluoroalkene product was formed, whereas performing the reaction using Et3N/THF gave the dialkynylfluoroalkene product. Both reaction conditions gave high yields of the desired enyne and endiyne products bearing fluorine atoms.
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