Asymmetric synthesis of anti-β-hydroxy-α-amino acids
作者:David A. Evans、Eric B. Sjogren、Ann E. Weber、Robin E. Conn
DOI:10.1016/s0040-4039(00)95643-0
日期:1987.1
The stereoselectivealdol addition reactions of chiral haloacetate enolates is reported. The conversion of these adducts to enantiomericallypure anti-β-hydroxy-α-amino acids is demonstrated (Eq 2).
Carefully controlled displacement of chiral chloroacetyl imides with cyanide afforded previously unreported cyanoacetimides in good overall yield. Knoevenagel condensation of the cyanoacetimides to furnish acrylonitriles was also demonstrated.