发明名称 |
PROCESS FOR THE PREPARATION OF AROMATIC AZOLE COMPOUNDS |
摘要 |
Aromatic azole compounds such as 2-(4-aminophenyl)-5-amino-benzimidazole are prepared in an organic sulfonic acid solvent instead of polyphosphoric acid. This allows recovery and recycle of the solvent and avoids the handling and environmental concerns resulting from the use of polyphosphoric acid. The resulting compounds find use in the pharmaceutical industry, as anticorrosion agents, and as precursors for high-performance fibers having high strength, stiffness, and flame resistance. |
申请公布号 |
US2014066629(A1) |
申请公布日期 |
2014.03.06 |
申请号 |
US201213597988 |
申请日期 |
2012.08.29 |
申请人 |
GOLDFINGER MARC B.;PELLENBARG TIMOTHY;E I DU PONT DE NEMOURS AND COMPANY |
发明人 |
GOLDFINGER MARC B.;PELLENBARG TIMOTHY |
分类号 |
C07D487/04;C07D235/18;C07D263/57;C07D513/04 |
主分类号 |
C07D487/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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