反应详情

温度

-10 °C

To a solution of CH2Cl2 (10 mL) and 1,2-dimethoxyethane (95 mg, 1.06 mmol) at −10° C. was added diethylzinc (130 mg, 1.06 mmol). To this solution was added dropwise diiodomethane (565 mg, 2.1 mmol). After the addition was complete, the resulting clear solution was stirred for 10 min at −10° C. A solution of Example 25B (200 mg, 0.53 mmol) was added to the reaction mixture, which was allowed to warm to room temperature and stir overnight. The reaction was quenched with NH4Cl then acetone and extracted with EtOAc (2×). The organics were combined, dried (MgSO4), filtered and solvent evaporated. The residue was purified by column chromatography using an Analogix® Intelliflash280™ (SiO2, 0-50% Hexane in ethyl acetate) to afford 159 mg (77%) of the title compound. 1H NMR (400 MHz, CDCl3) δ ppm 0.59 (q, J=5.52 Hz, 1 H) 0.92 (t, J=7.36, 6.44 Hz, 3 H) 0.94-1.14 (m, 2 H) 1.16-1.29 (m, 2 H) 1.65 (s, 9 H) 2.11-2.33 (m, 1 H) 3.91 (s, 3 H) 6.91 (d, J=8.90 Hz, 1 H) 7.33 (dd, J=8.90, 2.76 Hz, 1 H) 7.81 (s, 1 H) 8.08 (d, J=2.76 Hz, 1 H); MS (DCI/NH4+) m/z 393 (M+H)+.

1. additionAfter the addition
2. temperatureto warm to room temperature
3. stirringstir overnight
4. customThe reaction was quenched with NH4Cl
5. extractionacetone and extracted with EtOAc (2×)
6. dry with materialdried (MgSO4)
7. filtrationfiltered
8. customsolvent evaporated
9. customThe residue was purified by column chromatography