申请人:E. I. Du Pont de Nemours and Company
公开号:US03948895A1
公开(公告)日:1976-04-06
An improved method for the preparation of 3,5-diaminopyrazinoic acid (which is useful for the manufacture of diuretics) is described. New compounds obtained in the process include 3,5-diamino-2,6-dicarbamoylpyrazine; 3.5-diamino-6-carbamoylpyrazinoic acid and 3,5-diamino-6-carbamoylpyrazine. The latter compounds are also useful as curing agents for epoxy resins.
本文介绍了一种改进的制备3,5-二氨基吡嗪酸(用于制造利尿剂)的方法。在此过程中获得的新化合物包括3,5-二氨基-2,6-二羧酰基吡嗪;3.5-二氨基-6-羧酰基吡嗪酸和3,5-二氨基-6-羧酰基吡嗪。后两种化合物也可用作环氧树脂的固化剂。