发明名称 |
Synthesis of 3,5-diaminopyrazinoic acid from 3,5-diamino-2,6-dicyanopyrazine and intermediates |
摘要 |
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.
|
申请公布号 |
US3948895(A) |
申请公布日期 |
1976.04.06 |
申请号 |
US19720232206 |
申请日期 |
1972.03.06 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
DONALD, DENNIS S. |
分类号 |
C07D241/28;C08G69/26;(IPC1-7):C07D241/46 |
主分类号 |
C07D241/28 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|