N-acylated mercapto-.alpha.-amino acids of the general formula ##STR1## are prepared by reacting a nitrile of the general formula R.sub.1 -CN (II) at a temperature between 0.degree. C. and 100.degree. C. in water or in a mixture of water and an organic solvent which is at least partially miscible with water, in the presence of a base with a mercapto-.alpha.-amino acid of the general formula ##STR2## and subsequently releasing the N-acylated mercapto-.alpha.-amino acid of general formula (I) with an acid. Mercapto-.alpha.-amino acids can be selectively acylated on the amino group in this manner in a relatively simple manner.
通式为##STR1##的N-酰化巯基-.alpha.-
氨基酸可通过在
水或
水和至少部分互溶的有机溶剂混合物中,在存在碱的情况下,将通式为R.sub.1 -CN (II)的腈在0℃至100℃的温度下与通式为##STR2##的巯基-.alpha.-
氨基酸反应,并随后用酸释放通式为(I)的N-酰化巯基-.alpha.-
氨基酸。可以以相对简单的方式选择性地酰化
氨基团的巯基-.alpha.-
氨基酸。