反应详情

Thionyl chloride (5 mL) was added to solution of (4-benzyloxy-3-fluoro-phenyl)-methanol (CAB03017, 6.80 g, 29.28 mmol) in dichloromethane (50 mL). The solution was stirred for 1 h at room temperature and concentrated under reduced pressure. Then diethyl ether (100 mL) and water (20 mL) were added. The organic layer was separated, washed with conc. sodium bicarbonate solution (10 mL), dried over sodium sulphate and concentrated under reduced pressure. The residue was dissolved in dichloromethane (5 mL) and precipitated by addition of hexane (ca. 50 mL). The precipitate was filtered off and dried under high vacuum. Yield: 7.01 g (95%) white powder. 1H-NMR (400 MHz, CDCl3) δ=4.52 (s, 2H, —CH2Cl), 5.15 (s, 2H), 6.96 (dd, J=8.2, 8.2 Hz, 1H), 7.04-7.06 (m, 1H), 7.15 (dd, J=11.7, 2.4 Hz, 1H), 7.31-7.45 (m.5H). LRMS (FAB+): 91 (100), 215.0 (10), 250.0 (16, [M]+).

1. concentrationconcentrated under reduced pressure
2. additionThen diethyl ether (100 mL) and water (20 mL) were added
3. customThe organic layer was separated
4. washwashed with conc. sodium bicarbonate solution (10 mL)
5. dry with materialdried over sodium sulphate
6. concentrationconcentrated under reduced pressure
7. dissolutionThe residue was dissolved in dichloromethane (5 mL)
8. customprecipitated by addition of hexane (ca. 50 mL)
9. filtrationThe precipitate was filtered off
10. customdried under high vacuum