An asymmetric fluorination/semipinacol rearrangement of 2-oxa allylic alcohols, as catalyzed by cinchona-alkaloid derivatives, gives chiral β-fluoro ketones with moderate to high levels of enantioselectivity (see scheme). Both enantiomers of the product could be obtained by using the appropriate catalyst.
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Chen et al. (2012) studied this question.
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