反应详情

温度

0 °C

To a solution of 2-(4-(4-methyl-6-((tetrahydro-2H-pyran-2-yl)oxy)-3-(3-((tetrahydro-2H-pyran-2-yl)oxy)phenyl)-2H-chromen-2-yl)phenoxy)ethanol (Intermediate 4, 0.7 g, 1.25 mmol) in DCM (25 mL) at 0° C., triethylamine (0.26 mL, 1.87 mmol) and methanesulfonyl chloride (0.146 mL, 1.87 mmol) were added respectively. The reaction mixture was stirred at 0° C. for 1 h, and then diluted with DCM. To this mixture, water (20 mL), and sat'd ammonium chloride (20 mL) were added. The layers were separated and the organic layer was washed with water, washed with saturated NaHCO3, washed with brine, dried over Na2SO4, and concentrated to give 2-(4-(4-methyl-6-((tetrahydro-2H-pyran-2-yl)oxy)-3-(3-((tetrahydro-2H-pyran-2-yl)oxy)phenyl)-2H-chromen-2-yl)phenoxy)ethyl methanesulfonate (0.7 g). 1H NMR (DMSO-d6): δ 7.25 (d, 3H), 6.99-6.98 (m, 1H), 6.93-6.87 (m, 3H), 6.85-6.78 (m, 2H), 6.77-6.75 (dd, 1H), 6.61 (d, 1H), 5.98 (d, 1H), 5.43 (d, 1H), 5.34 (br, 1H), 4.47-4.45 (m, 2H), 4.16 (br, 2H), 3.83-3.70 (m, 2H), 3.56-3.47 (m, 2H), 3.18 (s, 3H), 2.05 (s, 3H), 1.92-1.65 (m, 6H), 1.60-1.40 (m, 6H).

1. customThe layers were separated
2. washthe organic layer was washed with water
3. washwashed with saturated NaHCO3
4. washwashed with brine
5. dry with materialdried over Na2SO4
6. concentrationconcentrated