发明名称 |
METHOD FOR PURIFICATION OF PYRIDINE, AND METHOD FOR PRODUCTION OF CHLORINATED PYRIDINE |
摘要 |
<p>Disclosed is a method for purifying crude pyridine on an industrial scale, at low cost, and in a simple manner. Specifically disclosed is a pyridine purification method comprising treating crude pyridine with an alkali and distilling the resulting product, or a pyridine purification method comprising adding an acid or water to crude pyridine, treating the resulting mixture with an alkali and distilling the resulting product. The purification method can purify crude pyridine on an industrial scale, at low cost, and in a simple manner. Pyridine obtained by the method has a high purity, and is therefore useful as a starting material for various types of organic synthesis. For example, by reacting the purified pyridine with chlorine, chlorinated pyridine can be produced in high yield.</p> |
申请公布号 |
WO2009122940(A1) |
申请公布日期 |
2009.10.08 |
申请号 |
WO2009JP55644 |
申请日期 |
2009.03.23 |
申请人 |
SUMITOMO SEIKA CHEMICALS CO., LTD.;YOSHIKAWA, NAOHIRO;BANDO, SEIJI;KONISHI, HIROTSUGU;LI, CHUN;YOSHIDA, KATSUHIKO |
发明人 |
YOSHIKAWA, NAOHIRO;BANDO, SEIJI;KONISHI, HIROTSUGU;LI, CHUN;YOSHIDA, KATSUHIKO |
分类号 |
C07D213/04;C07D213/61 |
主分类号 |
C07D213/04 |
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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