Method for the prepararation of enantiomerically enriched compounds

Process for the preparation of a diasteromerically enriched phenylglycine amide derivative in which an enantiomerically enriched phenylglycine amide is converted into the corresponding Schiff base with the aid of compound R2-C(O)-R3, and the Schiff base obtained is subsequently converted into the diastereomerically enriched phenyglycine amide derivative with the aid of a cyanide source, a reducing agent or an allyl organometallic compound. The phenylglycine amide derivatives obtained are interesting starting materials for the preparation of for example enantiomerically enriched alpha- and or beta-amino acids and derivatives thereof, such as amides and esters, and amines.