反应详情

To a solution of 2,6-dimethoxy-N,N-dimethylbenzamide (100 mg, 0.48 mmol) in methylene chloride (2.5 mL) is added BBr3 (1.0M in methylene chloride, 1.4 mL) dropwise and the mixture is stirred at RT for 18 h. Water is added and the suspension is extracted with EtOAc. The organic layer is washed with water and brine, and dried over sodium sulfate. The solvent is removed under reduced pressure to give the title compound: 1H NMR (DMSO-d6) δ 9.35 (s, 2H), 6.93-6.89 (t, J=8.34 Hz, 1H), 6.29-6.27 (d, J=8.09 Hz, 2H), 2.89 (s, 3H), 2.86 (s, 3H).

1. extractionthe suspension is extracted with EtOAc
2. washThe organic layer is washed with water and brine
3. dry with materialdried over sodium sulfate
4. customThe solvent is removed under reduced pressure