Enantioselective hydride abstraction in organic substrate: A novel use for chiral carbenium ions

[GRAPHICS] It is surprising that chiral cations have not been used to distinguish between prochiral hydrides when converse notions, such as asymmetric addition of a hyride to a prochiral functional group or use of a chiral anion to distinghish between a pair of prochiral protons, are methods employed everyday in enantioselective synthesis. To the best of our knowledge, this Letter describes the first example ol an oxidative enantioselective hydride transfer process.