2,3,6-トリメチルフェノール

外観

白色〜黄褐色, 結晶又は塊

溶解性

エタノール及びアセトンに溶けやすく、水にほとんど溶けない。

用途

有機合成原料。

用途

ビタミンEの合成のための重要な原料、ポリフェニレンオキシド樹脂修飾のためのコモノマー

化学的特性

White or light yellow solid

使用

2,3,6-Trimethylphenol is used as intermediate for synthetic vitamin E. It is used for manufacturing 2, 3, 5-Trimethylhydroquinone. It is used as intermediate for antioxidants and plastics. It is used as a comonomer for the modification of polyphenylene oxide resins.

調製方法

2,3,6-Trimethylphenol is produced selectively by gas phase methylation of m-cresol with methanol at 300–460 ℃ under normal pressure on ortho-selective metal oxide catalysts, as used for the selective methylation of phenol. The reaction occurs in multitube reactors with a fixed catalyst. The reaction temperature to be maintained depends on the catalyst used in each case. Iron oxide catalysts modified with oxides of other metals (e.g., Zn, Cr and Sn, or Mg and Si) are particularly suitable for the process.