申请人:Kureha Chemical Industry Co., Ltd.
公开号:US05434268A1
公开(公告)日:1995-07-18
A process for the manufacture of 1-(substituted or unsubstituted)phenyl-5-(substituted or unsubstituted)-phenyl-1H-1,2,4-triazole-3-carboxamide of the formula (I), which comprises heating 2-(substituted or unsubstituted)phenyl-4,5-oxazoledione 4-(substituted or unsubstituted)phenylhydrazone of the formula (II) and ammonia in water according to the following reaction formula, ##STR1## wherein A and B individually represent one or more substituted or unsubstituted phenyl groups. The target compound can be manufactured at a high purity and a high yield without using an organic solvent or an acidic compound.
一种制备式(I)的1-(取代或未取代)苯基-5-(取代或未取代)苯基-1H-1,2,4-三唑-3-羧酰胺的方法,包括将式(II)的2-(取代或未取代)苯基-4,5-噁唑二酮-4-(取代或未取代)苯基肼和氨在水中加热,按照以下反应式进行反应:##STR1## 其中A和B分别表示一个或多个取代或未取代的苯基基团。该目标化合物可以在不使用有机溶剂或酸性化合物的情况下高纯度高产率地制备。