Preparation of 5-cylamino-1,2,4-triazole-3-sulfonamides
申请人:DowElanco
公开号:US05410065A1
公开(公告)日:1995-04-25
5-Acylamino-1,2,4-triazole-3-sulfonamides, which are useful intermediates for the preparation of 1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamide herbicides are prepared from 5-amino-3-mercapto-1,2,4-triazole by sequential acylation to 5-acylamino-3-mercapto-1,2,4-triazoles, chlorination to 5-acylamino-3-chlorosulfonyl-1,2,4-triazoles, and condensation with substituted anilines to 5-acylamino-1,2,4-triazole-3-sulfonamides. 5-Acylamino-3-chlorosulfonyl-1,2,4-triazole compounds are key intermediates in the process.
Preparation of 5-acylamino-1,2,4-triazole-3-sulfonamides and intermediates
申请人:THE DOW CHEMICAL COMPANY
公开号:EP0375060A1
公开(公告)日:1990-06-27
A process for preparing 5-acylamino-1,2,4-triazole-3-sulfonamides, which are useful intermediates for the preparation of 1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamide herbicides, from 5-amino-3-mercapto-1,2,4-triazole by sequential acylation to 5-acylamino-3-mercapto-1,2,4--triazoles, chlorination to 5-acylamino-3-chlorosulfonyl-1,2,4-triazoles, and condensation with substituted anilines to 5-acylamino-1,2,4-triazole-3-sulfonamides is provided. Novel 5-acylamino-3-chlorosulfonyl-1,2,4--triazole compounds are key intermediates in the process.