申请人:Eli Lilly and Company
公开号:US04628088A1
公开(公告)日:1986-12-09
A novel process is described for preparing substituted pyridazines, where a less substituted pyridazine is reacted with a carboxylic acid in the presence of a silver ion as catalyst, using peroxydisulfate ion. The reaction is run at a temperature from about 40.degree. to 80.degree. C. in an aqueous solvent system and mineral acid. The substituted pyridazines are useful as intermediates to herbicidal and fungicidal compounds.
描述了一种制备取代
吡啶嗪的新工艺,其中在
银离子的催化剂作用下,将较少取代的
吡啶嗪与
羧酸反应,使用过
硫酸根离子。反应在约40度至80度C的温度下,在
水溶剂系统和矿酸中进行。这些取代
吡啶嗪可用作
除草剂和杀菌剂化合物的中间体。