PROCESS FOR PRODUCTION OF PHENOL DERIVATIVES SUBSTITUTED WITH IODINE AT ORTHO POSITION
申请人:Mitsubishi Gas Chemical Company, Inc.
公开号:EP2199271A1
公开(公告)日:2010-06-23
A process in which a phenol derivative is iodinated to produce a 2-iodophenol or 2,6-diiodophenol derivative substituted with iodine at an ortho position thereof is provided, which does not require any step of recovery of iodine but can produce it at low cost, in high yield and with high quality. A phenol derivative is mixed with a pyridine and hydrogen peroxide or iodic acid as an oxidizing agent, and reacted with molecular iodine. As a result, iodination can be performed very efficiently with iodine in an amount close to the theoretical amount relative to the phenol derivative, and the 2-iodophenol or 2,6-diiodophenol derivative can be obtained in high yield and with high quality.
本发明提供了一种将苯酚衍生物碘化以生产在其正位被碘取代的 2-碘苯酚或 2,6- 二碘苯酚衍生物的工艺,该工艺不需要任何碘回收步骤,但能以低成本、高产率和高质量生产苯酚衍生物。将苯酚衍生物与吡啶和作为氧化剂的过氧化氢或碘酸混合,然后与分子碘反应。因此,碘的用量与苯酚衍生物的理论用量相近,可以非常有效地进行碘化反应,从而可以高产率、高质量地获得 2-碘苯酚或 2,6-二碘苯酚衍生物。