申请人:Degussa Aktiengesellschaft
公开号:US04492793A1
公开(公告)日:1985-01-08
2-Amino-5-mercapto-1,3,4-thiadiazoles can be produced in very high yields from thiosemicarbazides and carbon disulfide in aqueous phase by working in the presence of the corresponding ammonium salt of bis-2,5-mercapto-1,3,4-thiadiazole at a temperature above 40.degree. C. Preferably the process is carried out in the presence of the mother liquor from a previous reaction.
2-氨基-5-巯基-1,3,4-噻二唑可以在水相中通过在对应的双-2,5-巯基-1,3,4-噻二唑铵盐存在下,利用硫脲和二硫化碳在40摄氏度以上的温度下工作,以非常高的产率生产。最好在前一反应的母液存在下进行该过程。