反应详情

Boron tribromide (1.0 M in CH2Cl2, 80.8 mL, 80.8 mmol) was added to a solution of N-[2-(2-methoxy-phenyl)-ethyl]-methanesulfonamide (18.5 g, 80.8 mmol) in CH2Cl2 (200 mL). The reaction was stirred at room temperature for 2 h and was poured onto water (200 mL). The aqueous layer was extracted with CH2Cl2 (2×) and the organic solution was washed with water (1×) and aqueous NaHCO3 (satd, 1×). The organic solution was dried over MgSO4, filtered, and concentrated to afford N-[2-(2-hydroxy-phenyl)-ethyl]-methanesulfonamide (16.8 g). 1H NMR (400 MHz, CDCl3) δ7.11 (m, 2H), 6.86 (m, 1H), 6.80 (m, 1H), 4.79 (m, 1H), 3.39 (t, 2H), 2.88 (t, 2H), 2.77 (s, 3H).

1. additionwas poured onto water (200 mL)
2. extractionThe aqueous layer was extracted with CH2Cl2 (2×)
3. washthe organic solution was washed with water (1×) and aqueous NaHCO3 (satd, 1×)
4. dry with materialThe organic solution was dried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated