反应详情

A solution of the product from Example 1e (1.17 g, 7.0 mmol) in 25 mL of absolute EtOH and SnCl2 (3.58 g, 29.8 mmol) was stirred at room temperature for 16 h. Adjusted to pH 12 with 1N NaOH and extracted with EtOAc. Dried over Na2SO4, filtered and concentrated under vacuum giving the title compound (835 mg, 82%) 1H NMR (300 MHz, CDCl3) δ ppm: 2.30 (2, 3H) 6.62 (d, J=8.83 Hz, 1H) 6.69 (s, 1H) 7.10 (m, 3H) 7.21 (m, 2H) 7.54 (d, J=7.72 Hz, 2H).

1. extractionAdjusted to pH 12 with 1N NaOH and extracted with EtOAc
2. dry with materialDried over Na2SO4
3. filtrationfiltered
4. concentrationconcentrated under vacuum