反应详情

温度

25 °C

To a 100 mL, round-bottomed flask was added 4-acetyl-N-(5-bromo-2-chloropyridin-3-yl)benzenesulfonamide from Step 1 (250 mg, 642 μmol) and THF (10 mL). To this solution, methylmagnesium bromide (3.0 N, 4 mL, 12 mmol) was added in under N2 protection. The suspension was stirred at 25° C. for 3 h. The mixture was quenched by aqueous saturated NH4Cl. The aqueous part was extracted by 10% methanol-DCM (3×), and the combined organic was dried over MgSO4, and concentrated in vacuo to provide the title product as a yellow oil (250 mg), which was taken on to the next step without further purification. MS (ESI positive ion) m/z: 407 (M+1).

1. customThe mixture was quenched by aqueous saturated NH4Cl
2. extractionThe aqueous part was extracted by 10% methanol-DCM (3×)
3. dry with materialthe combined organic was dried over MgSO4
4. concentrationconcentrated in vacuo