Asymmetric synthesis of (2S,3S)- and (2R,3R)-α,β-dialkyl- α-amino acids via alkylation of chiral nickel(II) complexes of aliphatic α-amino acids with racemic α-alkylbenzyl bromides

1. Soloshonok, V.A.
2. Boettiger, T.U.
3. Bolene, S.B.