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    • 31. 发明申请
    • Process for producing 5-iodo-2-methylbenzoic acid
    • 5-碘-2-甲基苯甲酸的制备方法
    • US20060167312A1
    • 2006-07-27
    • US10563088
    • 2004-07-01
    • Takafumi YoshimuraToshio HidakaYoshifumi SatoNorio FushimiKazuhiro Yamada
    • Takafumi YoshimuraToshio HidakaYoshifumi SatoNorio FushimiKazuhiro Yamada
    • C07C63/04
    • C07C51/363C07C63/70
    • The present invention provides a process for producing 5-iodo-2-methylbenzoic acid through iodination of 2-methylbenzoic acid, the process including, as essential steps, a reaction step of iodinating 2-methylbenzoic acid in the presence of a microporous compound, iodine, an oxidizing agent, and acetic anhydride, and a purification step including sublimation, distillation, crystallization, or a combination of two or more of these. According to the present invention, 5-iodo-2-methylbenzoic acid, which is useful for producing functional chemicals such as drugs, can be produced at high purity and high yield in a simple manner. Since the production process includes a simple reaction step and a simple separation/purification step, the load of purification is mitigated. In addition, the microporous compound such as a zeolite catalyst which has been separated and recovered from the reaction mixture can be repeatedly employed after performing of a simple treatment. Thus, the production process ensures a long service life of catalysts and high efficiency.
    • 本发明提供了通过2-甲基苯甲酸碘化生产5-碘-2-甲基苯甲酸的方法,该方法包括作为必要步骤的步骤,在微孔化合物存在下碘化2-甲基苯甲酸,碘 ,氧化剂和乙酸酐,以及包括升华,蒸馏,结晶或这些中的两种或更多种的组合的纯化步骤。 根据本发明,可以以高纯度和高产率以简单的方式制备可用于制备功能性化学物质如药物的5-碘-2-甲基苯甲酸。 由于生产过程包括简单的反应步骤和简单的分离/纯化步骤,减轻了纯化负荷。 此外,在进行简单处理之后,可以重复使用从反应混合物中分离回收的微孔化合物如沸石催化剂。 因此,生产过程确保催化剂的使用寿命长,效率高。