Abstract
Branching out! The catalytic asymmetric conjugate addition of glycinate Schiff bases to β-substituted gem-diactivated Michael acceptors under proton transfer conditions gives a variety of β-branched α-amino acids (see scheme; Dpm=diphenylmethylene, EWG=electron-withdrawing group) with excellent levels of diastereo- (typically syn/anti >90:10) and enantiocontrol (90–99 % ee).
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