Enantioenriched bifunctional reagents, which are air stable and can be used in economical, stereoselective, and chemodivergent ways, are valuable in organic synthesis. Although many B-,[1] Si-,[2] and/or Sn-based [3](chiral) bifunctional reagents have been reported for asymmetric aldehyde allylation, purely “organic”(C-based) chiral bifunctional reagents have not been developed yet. In recent years, acid-catalyzed asymmetric allyl-transfer reactions ...
