PROBLEM TO BE SOLVED: To provide a method of producing a polyhydric phenol compound which overcomes problems and enables mass production on an industrial scale with high purity at low costs.SOLUTION: A method of producing a polyhydric phenol compound includes a step of obtaining a crude product of a polyhydric phenol from a hydroxy-substituted aromatic compound by an oxidation coupling reaction, a step of dissolving the crude product of the polyhydric phenol in a mixed liquid of a water-soluble organic solvent and water and adding at least one boron-containing compound to the resultant solution and a step of adjusting the pH of the solution to 3.5-7.3, distilling the water-soluble organic solvent away and filtrating the precipitated polyhydric phenol compound separately.COPYRIGHT: (C)2016,JPO&INPIT【課題】本発明の目的は、前記の問題点を克服し、高純度且つ低コストで工業的規模での量産が実施可能な多価フェノール化合物の製造方法を提供することにある。【解決手段】酸化カップリング反応によりヒドロキシ置換芳香族化合物から多価フェノール粗生成物を得る工程、該多価フェノール粗生成物を水溶性有機溶剤と水の混合液に溶解し、少なくとも1種以上のホウ素含有化合物を該溶液に添加する工程、該溶液をpH3.5~7.3に調整し、水溶性有機溶剤を留去後析出した多価フェノール化合物をろ別する工程、を含む多価フェノール化合物の製造方法。【選択図】なし
