反应详情

温度

-78 °C

To a solution of 120 mg (0.278 mmol) of {1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}(3,5-difluorophenyl)methanone (Example 19, Step 4) in 3 mL of THF, 0.35 mL (0.69 mmol) of tert-butyl magnesium chloride (2M in THF) was added and stirred for 1 h at −78° C. Then to the reaction mixture was added 30 μL of ether and 5 mL of 7 mL of qNaHCO3. The pH was adjusted to 8-9 with 2N NaOH. The water layer was extracted with CH2Cl2 (3×30 mL). The combined organic layer was dried over Na2SO4 and concentrated. The residue was purified by silica gel chromatography with hexanes/ethyl acetate to afford of the title compound as a white solid; 1H-NMR (CDCl3) δ 0.88 (s, 9H), 2.46 (t, J=7.2 Hz, 1H), 2.97 (s, 1H), 3.05 (t, J=7.6 Hz, 1H), 3.31-3.39 (m, 2H), 3.42 (m, 1H), 4.25 (s, 1H), 6.56 (m, 2H), 6.68 (m, 1H), 7.24-7.36 (m, 8H); Mass Spectrum m/e=490 (M+1 35Cl, 35Cl) and 492 (M+1 35Cl, 37Cl).

1. extractionThe water layer was extracted with CH2Cl2 (3×30 mL)
2. dry with materialThe combined organic layer was dried over Na2SO4
3. concentrationconcentrated
4. customThe residue was purified by silica gel chromatography with hexanes/ethyl acetate