Method for purification of pyridine, and method for production of chlorinated pyridine
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 comprisin...
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Main Authors | , , , , |
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Format | Patent |
Language | Chinese English |
Published |
23.02.2011
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Abstract | 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. |
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AbstractList | 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. |
Author | YOSHIDA KATSUHIKO KONISHI HIROTSUGU LI CHUN YOSHIKAWA NAOHIRO BANDO SEIJI |
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Snippet | 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... |
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Title | Method for purification of pyridine, and method for production of chlorinated pyridine |
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