The present invention provides a method for producing asymmetrical mono-substituted alkylated compounds of α-amino acids that are represented by a specific formula, using an aldimine-type Schiff base. In the method of the present invention, the process of alkylating an aldimine-type Schiff base in a medium in the presence of an optically-active quaternary ammonium salt phase-transfer catalyst and an inorganic base is initiated, and subsequently the reaction is quenched at a time earlier than a time for completion of the stoichiometric reaction of the alkylation reaction, so that a mono-substituted alkylated product with high optical purity can be obtained.
本发明提供了一种使用醛
亚胺型席夫碱制备
α-氨基酸的不对称单取代烷基化合物的方法,其由特定的公式表示。在本发明的方法中,通过在存在光学活性季
铵盐相转移
催化剂和
无机碱的介质中烷基化醛
亚胺型席夫碱的过程,随后在达到
化学计量反应完成时间之前的时间中止反应,从而可以获得具有高光学纯度的单取代烷基化产物。