公开(公告)号：EP3059220B1

公开(公告)日：2018-12-05

申请号：EP13895696.6

申请日：2013-10-18

申请人： ABA Chemicals Corporation

发明人： LIN, Zhigang ,  LI, Hang ,  XU, Jun ,  QUE, Limin ,  QIN, Dongguang ,  JIANG, Yueheng

IPC分类号： C07C51/363 ,  C07C63/70

CPC分类号： C07C51/363 ,  C07C63/70

摘要： Provided is a method of preparing and recovering 2-methyl-5-iodobenzoic acid. The method utilizes o-methylbenzoic acid as raw material, iodinating via iodine/potassium persulfate in a mixed acid solvent to obtain a mixture of 2-methyl-5-iodobenzoic acid, 2-methyl-3-iodobenzoic acid, and 2-methyl-3, 5-diiodobenzoic acid; refining to obtain 2-methyl-5-iodobenzoic acid and recoverable mother liquor, the recoverable mother liquor being a mixture of 2-methyl-5-iodobenzoic acid, 2-methyl-3-iodobenzoic acid, and 2-methyl-3, 5-diiodobenzoic acid; conducting catalytic hydrogenation and deiodination to recover o-methylbenzoic acid and iodide ions; and oxidating the iodide ions to recover iodine. The whole process is recycled. The preparation and recovery method has cheap and easily available raw materials, and is easy of operation, has low requirements for equipment, and is suitable for large-scale industrial production.

公开(公告)号：EP3059220A1

公开(公告)日：2016-08-24

申请号：EP13895696.6

申请日：2013-10-18

申请人： ABA Chemicals Corporation

发明人： LIN, Zhigang ,  LI, Hang ,  XU, Jun ,  QUE, Limin ,  QIN, Dongguang ,  JIANG, Yueheng

IPC分类号： C07C51/363

CPC分类号： C07C51/363 ,  C07C63/70

摘要： Provided is a method of preparing and recovering 2-methyl-5-iodobenzoic acid. The method utilizes o-methylbenzoic acid as raw material, iodinating via iodine/potassium persulfate in a mixed acid solvent to obtain a mixture of 2-methyl-5-iodobenzoic acid, 2-methyl-3-iodobenzoic acid, and 2-methyl-3, 5-diiodobenzoic acid; refining to obtain 2-methyl-5-iodobenzoic acid and recoverable mother liquor, the recoverable mother liquor being a mixture of 2-methyl-5-iodobenzoic acid, 2-methyl-3-iodobenzoic acid, and 2-methyl-3, 5-diiodobenzoic acid; conducting catalytic hydrogenation and deiodination to recover o-methylbenzoic acid and iodide ions; and oxidating the iodide ions to recover iodine. The whole process is recycled. The preparation and recovery method has cheap and easily available raw materials, and is easy of operation, has low requirements for equipment, and is suitable for large-scale industrial production.

摘要翻译： 提供了一种制备和回收2-甲基-5-碘苯甲酸的方法。 该方法以邻甲基苯甲酸为原料，通过碘/过硫酸钾在混合酸溶剂中碘化，得到2-甲基-5-碘苯甲酸，2-甲基-3-碘苯甲酸和2-甲基-3-碘苯甲酸的混合物， 3,5-二碘苯甲酸; 精制以获得2-甲基-5-碘苯甲酸和可回收母液，所述可回收母液为2-甲基-5-碘苯甲酸，2-甲基-3-碘苯甲酸和2-甲基-3,5 - 二碘苯甲酸; 进行催化氢化和脱碘以回收邻甲基苯甲酸和碘离子; 并氧化碘离子以回收碘。 整个过程被回收。 该制备和回收方法原料廉价易得，操作简单，对设备要求低，适合大规模工业化生产。