反应详情

To a solution of 2,3-dimethyl-4-nitroaniline (0.5 g, 1.0 equiv.) in toluene (50 mL) was added thiophosgene (0.3 mL, 1.3 equiv.) and the reaction mixture was heated at the reflux temp. overnight. The resulting mixture was concentrated under reduced pressure and the residue was purified by column chromatography (25% CH2Cl2/hex) to afford 2,3-dimethyl-4-nitrophenyl isothiocyanate as a light yellow solid (0.30 g, 48%): 1H NMR (CDCl3) δ2.39 (s, 3H), 2.41 (s, 3H), 7.20 (d, J=8.4 Hz, 1H); CI-MS m/z 200 ((M+H)+).

1. temperaturethe reaction mixture was heated at the reflux temp
2. customovernight
3. concentrationThe resulting mixture was concentrated under reduced pressure
4. customthe residue was purified by column chromatography (25% CH2Cl2/hex)