Abstract
In the presence of sodium dithionite, allenes conjugated with a carbon-oxygen or a
phosphorus-oxygen double bond, such as allenic phosphonates, phosphine oxides and
allenecarboxylates, reacted readily with perfluoroalkyl iodides at room temperature
to give the corresponding addition products in moderate yields with complete regioselectivity
and stereoselectivity. Perfluoroalkyl groups were introduced into the terminal position
of allenes and addition products with the E -configuration were obtained selectively by the reaction.
Key words
perfluoroalkyl iodides - allenes - radical addition - stereoselectivity - regioselectivity
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