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.
硫醇羰酸酯的
化学式为##
SPC1##,其中R.sub.1和R.sub.2分别表示氢原子或甲基基团,R.sub.3表示直链或支链饱和或不饱和的烷基基团,其碳数为1至5,或者是苄基或苯甲基基团,它们可能是核取代的,对于保护含有##EQU1##基团的胺、
肼、
氨基酸和肽很有用。
硫醇羰酸酯可以通过将2-
巯基嘧啶的碱
金属盐与
光气反应,并将所得的
硫醇
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。