反应详情

A mixture of 6-bromo-2H-phthalazin-1-one (50 mg, 0.22 mmol), 4-methoxybenzylamine (0.030 mL, 0.24 mmol), Pd2(dba)3 (20 mg, 0.022 mmol), rac-BINAP (41 mg, 0.066 mmol) and NaOt-Bu (52 mg, 0.55 mmol) in toluene (10 mL) was heated at reflux for 3 h. The mixture was allowed to cool, diluted with EtOAc (25 mL) and washed with NaHCO3 (25 mL). The organic layer was dried over anhydrous sodium sulfate and concentrated. Chromatography on silica (EtOAc/hexanes) yielded the title compound (22 mg, 35%). 1H-NMR (DMSO-d6) δ: 12.1 (s, 1H), 8.05 (s, 1H), 7.88 (d, 1H), 7.30 (m, 3H), 7.10 (dd, 1H), 6.90 (d, 2H), 6.75 (s, 1H), 4.20 (d, 2H), 3.85 (s, 3H); m/z (M+1)=282.22.

1. temperaturewas heated
2. temperatureat reflux for 3 h
3. temperatureto cool
4. washwashed with NaHCO3 (25 mL)
5. dry with materialThe organic layer was dried over anhydrous sodium sulfate
6. concentrationconcentrated