反应详情

To a solution of 259 (250mg, 1.64 mmol) in DMF (16 mL) at 0° C. was added NaH (197 mg, 4.92 mmol, 60% in mineral oil), and the mixture was stirred for 30 min, followed by addition of Mel (112 □L, 1.80 mmol). The reaction mixture was stirred at room temperature for 2 h before acetic acid (1 mL) was added. Solvents were removed under reduced pressure, the residue was partitioned between water and EtOAc. Organic phase was collected, dried over anhydrous Na2SO4 and concentrated. The residue was purified by flash column chromatography, eluent EtOAc/hexane (1:1), to afford the title compound 263 (200 mg, 92% yield) as an off-white solid. MS (m/z): 167.1(M+H) (found).

1. additionfollowed by addition of Mel (112 □L, 1.80 mmol)
2. additionwas added
3. customSolvents were removed under reduced pressure
4. customthe residue was partitioned between water and EtOAc
5. customOrganic phase was collected
6. dry with materialdried over anhydrous Na2SO4
7. concentrationconcentrated
8. customThe residue was purified by flash column chromatography, eluent EtOAc/hexane (1:1)