发明名称 |
METHOD FOR PRODUCING AMIDE COMPOUND |
摘要 |
The present invention relates to a method for producing a high purity, high quality amide compound, particularly, lactam. A first embodiment of the present invention is characterized in that an amount of each of a halide, an aldehyde compound, an alcohol compound and a nitrile compound contained in a solution recycled into an oxime-forming step is controlled to an amount of 0.4 mol% or less based on the ketone as a starting material. A second embodiment of the present invention is characterized in that one or more compounds selected from the group consisting of a ketone, an oxime and an amide compound are purified by hydrogenation and/or crystallization for eliminating impurities containing a double bond. A third embodiment of the present invention is characterized in that a content of impurities having a cyclic bridge structure is controlled by using a cycloalkanone purified by recrystallization. |
申请公布号 |
EP2548862(B1) |
申请公布日期 |
2016.06.08 |
申请号 |
EP20110756317 |
申请日期 |
2011.03.15 |
申请人 |
UBE INDUSTRIES, LTD. |
发明人 |
KUGIMOTO, JUNICHI;KAWAI, JOJI;YAMATO, KAZUO;OKADA, MASAHIDE;SUGIMOTO, TSUNEMI;MATSUMOTO, HIROSHI |
分类号 |
C07D201/04;C07B61/00;C07D225/02 |
主分类号 |
C07D201/04 |
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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