METHOD OF EXTRACTING ASYMMETRIC β-DIKETONE COMPOUNDS FROM β-DIKETONE COMPOUNDS
    4.
    发明专利
    METHOD OF EXTRACTING ASYMMETRIC β-DIKETONE COMPOUNDS FROM β-DIKETONE COMPOUNDS 有权
    从β-溴酮化合物中提取不对称和二 - 酮酮化合物的方法

    公开(公告)号:JP2014088332A

    公开(公告)日:2014-05-15

    申请号:JP2012237909

    申请日:2012-10-29

    IPC分类号: C07C45/80 C07C49/12 C07C49/14

    CPC分类号: C07C45/80 C07C49/12 C07C49/14

    摘要: PROBLEM TO BE SOLVED: To provide a method of extracting asymmetric β-diketone compounds from β-diketone compounds.SOLUTION: A method of extracting asymmetric β-diketone compounds from β-diketone compounds comprising asymmetric β-diketone compounds and at least one symmetric β-diketone compound comprises: (A) a step of adjusting the pH of a mixed solution of β-diketone compounds and water to 11.5 or higher to dissolve β-diketone compounds in water to prepare a solution of β-diketone compounds; and (B) a step of adjusting the pH of the solution of the β-diketone compounds to 9.5 or lower and recovering asymmetric β-diketone compounds of formula (1) separated from the solution of the β-diketone compounds. The extracting method includes additionally one or both of (a) a step of setting, in the step (A) the upper limit of pH of the mixed solution as 12.5 to prepare a solution of β-diketone compounds and bringing a hydrophobic solvent into contact with the solution of β-diketone compounds and (b) a step of setting, in the step (B), the lower limit of the pH of the solution of β-diketone compounds as 8.0.

    摘要翻译: 要解决的问题:提供从β-二酮化合物中提取不对称&bgr-二酮化合物的方法。解决方案:从包含不对称&bgr-二酮化合物的&bgr-二酮化合物中提取不对称&bgr-二酮化合物的方法和 至少一种对称的二酮化合物包括:(A)将β-二酮化合物和水的混合溶液的pH调节至11.5或更高以将水 - 二酮化合物溶解在水中以制备溶液 二酮化合物; 和(B)将β-二酮化合物的溶液的pH调节至9.5或更低的步骤,并回收与β-二酮化合物的溶液分离的式(1)的不对称 - 二酮化合物。 提取方法另外包括以下一个或两个:(a)在步骤(A)中将混合溶液的pH的上限设定为12.5以制备&bgr-二酮化合物的溶液并将疏水性溶剂引入 与(b)二酮化合物的溶液接触,和(b)在步骤(B)中将&bgr-二酮化合物溶液的pH值的下限定为8.0的步骤。