申请人:Nitto Boseki Co. Ltd.
公开号:US03932375A1
公开(公告)日:1976-01-13
Thiolcarbonates represented by the formula, ##SPC1## Wherein R.sub.1 and R.sub.2 are individually a hydrogen atom or a methyl group, and R.sub.3 is a straight chain or branched chain saturated or unsaturated alkyl group having 1 to 5 carbon atoms or is a benzyl or benzhydryl group which may be nuclear substituted, are quite useful for protecting the amino or imino groups of amines, hydrazines, amino acids and peptides with groups of the formula ##EQU1## The thiolcarbonates can be easily produced by reacting an alkali metal salt of 2-mercaptopyrimidine with phosgene, and reacting the resulting thiolchloroformate with an alcohol (R.sub.3 OH), or by reacting a 2-mercaptopyrimidine with a halocarbonic acid ester.
巯基碳酸酯的化学式表示为##SPC1##其中R.sub.1和R.sub.2分别为氢原子或甲基基团,R.sub.3为直链或支链饱和或不饱和的有1至5个碳原子的烷基基团,或者为苄基或苄甲基基团,可能有核取代,对于保护氨基或亚胺基团的胺、肼、氨基酸和肽非常有用,具有下述化合物的基团##EQU1##巯基碳酸酯可通过将2-巯基嘧啶的碱金属盐与光气反应,然后将产生的巯基氯甲酸酯与醇(R.sub.3 OH)反应,或者通过将2-巯基嘧啶与卤代羧酸酯反应来轻松制备。