PROCESS FOR THE PREPARATION OF 2-AMINO-5,8-DIMETHOXY[1,2,4]TRIAZOLO[1,5-c]PYRIMIDINE FROM 4-AMINO-2,5-DIMETHOXYPYRIMIDINE
申请人:Dow AgroSciences LLC
公开号:US20140081024A1
公开(公告)日:2014-03-20
5-Substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines are manufactured from 4-amino-2,5-dialkoxypyrimidines in an improved process in which the generation of gaseous by-products is controlled by the continuous addition of hydroxylamine as a free base.
5-取代-8-烷氧基[1,2,4]三唑并[1,5-c]嘧啶-2-胺是从4-氨基-2,5-二烷氧基嘧啶中制造的,改进的工艺中,通过持续添加游离态羟胺来控制气态副产物的生成。