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An efficient method for the asymmetric synthesis of enantiomerically enriched derivatives of (S)-propargylglycine by С-alkylation of Ni-complex of Schiff’s bases of propargylglycine and chiral auxiliary (S)-2-N-[N’-(benzylprolyl) amino] benzophenone with benzyl bromide and its derivatives (de 85-90 %) has been developed. This resulted in synthesis of new enantiomerically enriched α-amino acids containing acetylenic bond in the side chain (ee >95%).

Synthesis of Enantiomerically Enriched Amino Acids Containing Acetylenic Bond in the Side-Chain Radical