专利检索 ap:("DOWELANCO") AND inv:"BUDD, Jeffrey, T." 第 1 页

1.

发明公开
PROCESS FOR PREPARING N-(2,6-DICHLORO-3-METHYLPHENYL)-5-7-DIHALO 1,2,4]TRIAZOLO 1,5A]PYRIMIDINE-2-SULFONAMIDE BY CYCLIZATION AND HALO-DEHYDROXYLATION 失效
标题翻译：用于生产N-（2,6-二氯-3-甲基苯基）-5,7-二卤代（1,2,4）三唑并（1.5A）嘧啶-2-磺酰胺环化和脱羟基HALO

公开(公告)号：EP0724586A1

公开(公告)日：1996-08-07

申请号：EP94930057.0

申请日：1994-10-05

申请人： DOWELANCO

发明人： RINGER, James, W. , BUDD, Jeffrey, T. , TOBEY, Richard, E. , ZETTLER, Mark, W.

IPC分类号： A61K31 , A61P31 , C07D487

CPC分类号： C07D487/04

摘要： The invention relates to a process for making DCSA by cyclization of DCM-ATSA with an acid and phosphorus pentachloride to produce DHSA and two isomeric compounds known as HCSA. The resulting compounds from the cyclization are halo-dehydroxylated to produce DCSA.