Tetrahedron Letters p. 3721 - 3724 (1983)
Update date:2022-08-17
Topics:
Bajgrowicz, J. A.
Cossec, B.
Pigiere, Ch.
Jacquier, R.
Viallefont, Ph.
α-Disubstituted amino acids are prepared with good optical yields by enantioselective substitution using Schiff bases between α-monosubstituted amino acids and (S,S,S) or (R,R,R)-2-hydroxypinan-3-one as chiral reagent.The configuration of these acids is found to be dependent on the shielding effect of their aliphatic chain in the intermediary Schiff dianion.
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