反应详情

500 mg of 2,3,5,6-tetramethylphenol and 10 mg of RuCl3.3H2O were reacted in 5 ml of acetic acid in the same manner as in Example 1, followed by the same treatment as in Example 1, whereby 288 mg (53% yield) of tetramethylbenzoquinone and 228 mg of a mixture of three unidentified substances were obtained. The tetramethylbenzoquinone was recrystallized from hexane to obtain yellow needle-like crystals having a melting point of from 114° to 115° C.