The present invention relates to a process for reacting &agr;-aminoaldehyde derivatives having a sterically bulky amino group which are commercially available with a metal cyanide in the presence of an acid chloride, an acid anhydride or the like to synthesize 3-amino-2-hydroxybutyronitrile derivatives in high yields and high erythro selectivity. When optically active &agr;-aminoaldehyde derivatives are used, racemization hardly occurs during the reaction, and the desired products are obtained in high optical purity.
本发明涉及一种方法,用于将具有立体位阻
氨基团的α-
氨基醛衍
生物与
金属
氰化物在酸
氯化物、酸酐或类似物的存在下反应,以高产率和高红细胞选择性合成3-
氨基-2-羟基
丁腈衍
生物。当使用光学活性的α-
氨基醛衍
生物时,在反应过程中几乎不会发生外消旋,所以可以获得高光学纯度的期望产物。