反应详情

A mixture of Example 360A (170 mg, 0.38 mmol), p-toluenesulfonic acid (10 mg), acetone (9 mL), and water (1 mL) was stirred for 1.25 hours and concentrated. The residue partioned between saturated aqueous sodium bicarbonate and dichloromethane. The organic layer was dried (MgSO4), filtered, and concentrated to provide the desired product (150 mg). 1H NMR (DMSO-d6, 400 MHz) δ 9.66 (d, 1H), 8.32 (s, 1H), 7.89 (d, 1H), 7.68 (s, 1H), 7.47 (m, 4H), 7.20 (t, 1H), 7.14 (m, 4H), 6.65 (dd, 1H); MS m/e 373.3 (M+H)+, 371.1 (M−H)−.

1. concentrationconcentrated
2. dry with materialThe organic layer was dried (MgSO4)
3. filtrationfiltered
4. concentrationconcentrated