申请人:The Dow Chemical Company
公开号:US04734123A1
公开(公告)日:1988-03-29
N-aryl-5,6,7-substituted-1,2,4,-triazolo-[1,5-a]pyrimidine-2-sulfonamides undergo oxidative ring cleavage to afford herbicidal substituted N-aryl-5-amino-1,2,4-triazole-3-sulfonamides. These triazolesulfonamides can undergo cyclizations with 1,3-dicarbonyls to form novel herbicidal substituted N-aryl-5,6,7-substituted-1,2,4-triazolo-[1,5-a]pyrimidine-2-sulfonamides.
N-芳基-5,6,7-取代-1,2,4-三唑并[1,5-a]嘧啶-2-磺酰胺经氧化环裂解反应,生成除草剂取代的N-芳基-5-氨基-1,2,4-三唑-3-磺酰胺。这些三唑磺酰胺可以与1,3-二羰基化合物发生环化反应,形成新型除草剂取代的N-芳基-5,6,7-取代-1,2,4-三唑并[1,5-a]嘧啶-2-磺酰胺。