申请人:Degussa Aktiengesellschaft
公开号:US04523012A1
公开(公告)日:1985-06-11
The subject matter of the invention are S-substituted 2-azido-3-mercapto-propionic acid esters of the general formula ##STR1## in which R.sup.1 is a methyl or ethyl group and R.sup.2 is an unsubstituted or substituted alkyl group, a cycloalkyl group, an unsubstituted or substituted aromatic or heteroaromatic group or a benzyl group, and a process for their production by reaction of a methyl or ethyl ester of 2-chloroacrylic acid with a corresponding thiol to form an S-substituted 2-chloro-3-mercapto-propionic acid ester and subsequently exchanging the chlorine atom with an azido group as well as use of the compounds of formula (I) as intermediate products in the production of D,L-cysteine or derivatives of D,L-cysteine.
本发明涉及一般式为##STR1##的S-取代的2-叠氮-3-巯基-丙酸酯,其中R.sup.1为甲基或乙基基团,R.sup.2为未取代或取代的烷基基团、环烷基团、未取代或取代的芳香或杂芳基团或苄基团,并提供了一种通过将2-氯丙烯酸的甲基或乙基酯与相应的硫醇反应形成S-取代的2-氯-3-巯基-丙酸酯,然后交换氯原子以得到叠氮基团的方法来制备它们的方法,以及将式(I)化合物用作D,L-半胱氨酸或D,L-半胱氨酸衍生物的中间体的用途。