申请人:DowElanco
公开号:US05008396A1
公开(公告)日:1991-04-16
5-Amino-3-chlorosulfonyl-1,2,4-triazole is prepared by the chlor-oxidation of 5-amino-3-mercapto-1,2,4-triazole. The process is characterized by the preformation of disulfide from the mercaptan prior to treatment with chlorine. The 5-amino-3-chlorosulfonyl-1,2,4-triazole reaction mixture can be directly reacted with substituted anilines to prepare N-(3-(((aryl)amino)sulfonyl)-1H-1,2,4-triazol-5-yl)amines which are useful intermediates for the manufacture of herbicides.
5-氨基-3-氯磺酰基-1,2,4-三唑是通过5-氨基-3-巯基-1,2,4-三唑的氯氧化制备的。该过程的特点是在用氯处理前,先从巯基预形成二硫键。5-氨基-3-氯磺酰基-1,2,4-三唑反应混合物可直接与取代苯胺反应,制备出N-(3-(((芳基)氨基)磺酰基)-1H-1,2,4-三唑-5-基)胺,这些化合物是制造除草剂的有用中间体。