反应详情

6-Methoxy-2-naphthylamine (400 mg, 1.6 mmol) was suspended in 20 mL of MeCN with 12 mg of NH4OAc (0.16 mmol) and stirred in an ice bath. N-Bromosuccinimide (299 mg, 1.68 mmol) was dissolved in 6 mL of dry MeCN and added slowly over 1 hour (h). The reaction was stirred for an additional hour at 0° C., then adsorbed onto Celite, concentrated under reduced pressure and subjected to silica gel chromatography eluting with 0→60% EtOAc in heptanes to yield 300 mg of an orange solid. 7.94 (d, 1H); 7.55 (d, 1H); 7.18 (dd, 1H); 7.09 (d, 1H); 7.02 (d, 1H); 4.29 (br s, 2H); 3.89 (s, 3H).

1. additionadded slowly over 1 hour (h)
2. stirringThe reaction was stirred for an additional hour at 0° C.
3. concentrationconcentrated under reduced pressure
4. washeluting with 0→60% EtOAc in heptanes