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    • 3. 发明授权
    • Thiocarbonates
    • 三氯甲烷
    • US3852290A
    • 1974-12-03
    • US28741072
    • 1972-09-08
    • NITTO BOSEKI CO LTD
    • NARITA KNAGASAWA TKUROIWA K
    • C07D207/16C07D209/20C07D239/38C07D51/36
    • C07D239/38C07D207/16C07D209/20Y02P20/582
    • Thiolcarbonates represented by the formula,

      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 (R3OH), or by reacting a 2-mercaptopyrimidine with a halo-carbonic acid ester.

      WHEREIN R1 and R2 are individually a hydrogen atom or a methyl group, and R3 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

      D R A W I N G
    • 由式WHEREIN R1和R2表示的硫醇碳酸酯分别为氢原子或甲基,R3为具有1至5个碳原子的直链或支链饱和或不饱和烷基,或可为苄基或二苯甲基, 核取代对于保护具有下式基团的胺,肼,氨基酸和肽的氨基或亚氨基非常有用。硫醇碳酸酯可以容易地通过使2-巯基嘧啶的碱金属盐与光气反应,并使所得的 硫醇氯甲酸酯与醇(R3OH)反应,或通过使2-巯基嘧啶与卤代碳酸酯反应。