Abstract
The first α-sp(2)-carbon of carbonyl compounds attacked catalytic desymmetrization reaction of aziridines is disclosed. A simple in situ generated magnesium catalyst from 3,3'-bromine-8H-BINOL and dibutylmagnesium was employed. It is interesting that the bromine atom on the chiral ligand plays a key role in introducing a high level of enantioselectivities and high reaction efficiency. Both enantiomers of the ring-opening product could be smoothly obtained by using (R)- and (S)-L7.
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