An improved process for the preparation of a cyclic amino acid by a novel synthesis is described where benzonitrile is treated with an alkali metal and an amine under Birch reduction conditions to generate in situ an anionic intermediate which is alkylated with an &agr;-haloacetic acid moiety which is subsequently converted to the desired product, as well as valuable intermediates used in the process.
描述了一种通过新型合成制备环状
氨基酸的改进过程,其中
苯甲腈在伯奇还原条件下与碱
金属和胺反应,生成原位的阴离子中间体,该中间体与α-卤
乙酸基团发生烷基化反应,随后转化为所需产物,以及在该过程中使用的有价值的中间体。