Abstract
We present an efficient synthesis of N-Z-(2SR,3S)-3-amino-2-hydroxy-4-phenylbutanoic acids by hydroxylation of an enolate derived from methyl (3S)-N-Z-3-amino-4-phenylbutanoate with oxodiperoxymolybdenum (pyridine) (hexamethyl phosphoric triamide) complex (MoOPH).