反应详情

温度

0 °C

To a stirred THF (30.00 mL) solution of 1-[4-(tert-butyl-dimethyl-silanyloxy)-cyclohexyl]-4-iodo-1H-pyrazole (Compound 137B, 1.1400 g, 2.8053 mmol) was added 2.00 M of isopropylmagnesium chloride in THF (2.31 mL, 4.63 mmol) dropwise under an atmosphere of Nitrogen in 5 min at 0° C. The reaction mixture was stirred at 0° C. for another hour. 2-Methoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (0.9577 mL, 5.610 mmol) was added at 0° C. and then the mixture was stirred at room temperature for another hour. The mixture was treated with saturated NH4Cl (10 ml), extracted with EtOAc (20 ml×3). The extracts were washed with water (10 ml), brine (15 ml), dried over Na2SO4. Solvent was removed under reduced pressure to give a residue which was purified by flash chromatography (10% EtOAc/hexane). MS (ES+): m/z=407.18 [MH+]. HPLC: tR=3.21 min (polar—5 min, ZQ3).

1. stirringthe mixture was stirred at room temperature for another hour
2. extractionextracted with EtOAc (20 ml×3)
3. washThe extracts were washed with water (10 ml), brine (15 ml)
4. dry with materialdried over Na2SO4
5. customSolvent was removed under reduced pressure
6. customto give a residue which
7. customwas purified by flash chromatography (10% EtOAc/hexane)
8. customHPLC: tR=3.21 min (polar—5 min, ZQ3)