反应详情

To a solution of 3-nitronaphthalene-1-carboxylic acid (4.34 g, 20 mmol) in EtOH (50 mL) was added SOCl2 (3.70 mL, 30 mmol) at 0° C. The mixture was heated at reflux for 2 h and then concentrated. The residue was recrystallized from EtOH to yield ethyl 3-nitronaphthalene-1-carboxylate (4.2 g). 1H NMR (300 MHz, DMSO-d6): δ 9.16 (s, 1H), 8.77 (d, J=8.7 Hz, 1H), 8.62 (s, 1H), 8.34 (d, J=8.1 Hz, 1H), 7.87 (t, J=7.2 Hz, 1H), 7.75 (t, J=7.2 Hz, 1H), 4.43 (q, J=7.2 Hz, 2H), 1.38 (t, J=7.2 Hz, 3H).

1. temperatureThe mixture was heated
2. temperatureat reflux for 2 h
3. concentrationconcentrated
4. customThe residue was recrystallized from EtOH