Nitric Acid → N-(2-ethyl-6-nitrophenyl)acetamide

関与物質

反応条件

反応手順

A solution of nitric acid (4.2 mL) in glacial acetic acid (5.2 mL)) was added drop wise to solution of N-(2-ethylphenyl)acetamide (Example 139f)(1.00 g, 6.13 mmol) in AcOH (22 mL) and acetic anhydride (18 mL) at 0° C. The reaction was stirred at 0° C. for 1 h, diluted with water (50 mL) and neutralized with Na2CO3 (pH˜8). The neutralized mixture was extracted with EtOAc (3×50 mL), the combined extract was washed with water and brine, and dried with anhydrous MgSO4. The filtrate was evaporated and the residue was purified on HPLC to give 0.62 g (48%) of the title compound as a white solid. 1H NMR (400 MHz, DMSO-d6) δ 9.81 (broad s, 1H), 7.68-7.73 (m, 1H), 7.57-7.62 (m, 1H), 7.39 (t, J=8.0 Hz, 1H), 2.64 (q, J=8.0 Hz, 2H), 2.00 (s, 3H), 1.10 (t, J=8.0 Hz, 3H).

情報源と証拠