Nitric Acid → 1-Nitro-2,5-bis(trifluoromethyl)benzene

関与物質

反応条件

反応手順

1,4-Bis(trifluoromethyl)benzene (10.06 g, 47 mmol) in fuming sulfuric acid (20 g) was cooled to 0° C. Fuming nitric acid (8 g) was added cautiously. The mixture was heated to 100° C. and stirred for 1 hour. A mixture of fuming nitric acid (6 g) and fuming sulfuric acid (12 g) was added, and the mixture was heated to 110° C. and stirred for 6 hours. After cooling to r.t., the mixture was poured into ice water (150 g) cautiously, and extracted with chloroform (100 mL×3). The combined organic layers were washed with water (100 mL×2), 10% sodium hydroxide aqueous solution (100 mL×2), and then water (100 mL×2). The resulting organic layers were dried over sodium sulfate, filtered, and concentrated to afford 2-nitro-1,4-bis(trifluoromethyl)benzene as an oil (3.3 g).

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