Nitric Acid → 2,5-Cyclohexadiene-1,4-dione, 2,3,5-trimethyl-

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Reaction Steps

17.0 g (0.1 mole) of 2,3,6-trimethyl-4-chlorophenol obtained in Example 1 (A) was dissolved in 100 g of acetic acid, and 10 g of concentrated nitric acid was added dropwise thereto in 30 minutes under stirring. The reaction proceeded immediately. After stirring for another 30 minutes, the reaction solution was subjected to steam distillation. The same treatment as in Example 1 was conducted to obtain 13.8 g of 2,3,6-trimethyl-p-benzoquinone (92.0 percent in yield).

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