反应详情

温度

100 °C

2,3-dichloro-1,4-naphthoquinone (0.5 mmol, 114 mg) was dissolved in anhydrous DMF (1.5 mL) in a 5 mL vial. 7-Amino-4-methylcoumarin (0.5 mmol 88 mg) and triethylamine (0.5 mmol, 70 μL) were added. The solution was heated at 100°C. for 16 hr. Pyrrolidine (2 mmol, 0.17 mL) was added. The solution was heated at 100° C. for 16 hr. The excess volatile amines were removed under vacuum. The residue was dissolved in 3 mL acetonitrile containing 1% TFA. The crude product (1.0 mL) was purified with HPLC to give a dark purple solid (26.3 mg). 1H NMR (CDCl3): 8.09-7.98 (m, 2H), 7.64-7.55 (m, 2H), 7.45 (d, 1H, J=8.6 Hz), 6.74 (d, 1H, J=8.6 Hz), 6.31 (s, 1H), 6.09 (s, 1H), 3.63-3.54 (m, 4H), 2.36 (s, 3H), 1.78-1.69 (m, 4H) ppm.

1. temperatureThe solution was heated at 100° C. for 16 hr
2. customThe excess volatile amines were removed under vacuum
3. dissolutionThe residue was dissolved in 3 mL acetonitrile containing 1% TFA
4. customThe crude product (1.0 mL) was purified with HPLC