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。