反应详情

温度

55 °C

Trimethylsulfoxonium iodide (164.4 mg, 0.747 mmol) was added to a suspension of sodium hydride (89.6 mg, 2.24 mmol) (60% dispersion in oil) in DMF (2.0 mL) at room temperature. The mixture was stirred for 15 min after which time a solution of (E)-5-fluoro-3-((3-iodo-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazol-6-yl)methylene)indolin-2-one (200 mg, 0.373 mmol) in DMF (1.25 ml) was added. The solution was stirred at 55° C. for 7.0 h prior to quenching reaction mass over 25% NH4Cl solution (10 mL) at room temperature. The product was extracted using ethyl acetate (15 mL×2) and the organic layer was dried over MgSO4 and evaporated in vacuo. The crude product was purified using silica gel column chromatography (hexane:acetone 80:20 as an eluent) to yield a creamy semi-solid, which was then triturated with hexanes (2.0 mL) to give the title compound as an off-white powder (94 mg, 46%). 1H NMR (400 MHz, CDCl3) δ 8.48 (s, 1H), 7.46 (s, 1H), 7.41 (d, J=8.8 Hz, 1H), 7.03 (d, J=8.8 Hz, 1H), 6.86 (s, 1H), 6.78 (m, 1H), 5.72 (s, 2H), 5.68 (d, J=8 Hz, 1H), 3.54-3.48 (m, 3H), 2.34 (br s, 1H), 2.13 (br s, 1H), 0.88 (m, 2H), 0.03 (s, 9H).

1. additionwas added
2. customto quenching
3. customreaction mass over 25% NH4Cl solution (10 mL) at room temperature
4. extractionThe product was extracted
5. dry with materialthe organic layer was dried over MgSO4
6. customevaporated in vacuo
7. customThe crude product was purified
8. customto yield a creamy semi-solid, which
9. customwas then triturated with hexanes (2.0 mL)