发明授权
- 专利标题： Process for the preparation of 1,2,4-triazole
- 专利标题（中）： 制备1,2,4-三唑的方法
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申请号： US199460申请日： 1980-10-22
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公开(公告)号： US4283545A公开(公告)日： 1981-08-11
- 发明人: Harald Knorr , Thomas Maier , Hilmar Mildenberger , Helmut Korbanka
- 申请人： Harald Knorr , Thomas Maier , Hilmar Mildenberger , Helmut Korbanka
- 申请人地址： DEX
- 专利权人： Hoechst Aktiengesellschaft
- 当前专利权人： Hoechst Aktiengesellschaft
- 当前专利权人地址： DEX
- 优先权： DEX2943265 19791026
- 主分类号： C07D249/08
- IPC分类号： C07D249/08
摘要：
1,2,4-triazole is obtained by cyclization of N,N'-diformylhydrazine with ammonia in the presence of formamide. The amount of ammonia required is either formed in situ from thermally decomposable ammonium salts, or supplied by feeding in gaseous ammonia. Simultaneously, the water of reaction is constantly distilled off from the system.
公开/授权文献
- US5403472A Control of bromination of drinking water 公开/授权日：1995-04-04
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