反应详情

Sodium borohydride (60 mg, 1.59 mmol, 1.4 equiv) was added to a suspension of methyl 6-((R)-4-((R)-1-(tert-butoxy)ethyl)-2-oxooxazolidin-3-yl)-2-chloropyrimidine-4-carboxylate (400 mg, 1.12 mmol) in methanol (11.2 mL) at 0° C. The ice bath was removed and the reaction was stirred at room temperature for 1 hour. The reaction was quenched with saturated aqueous ammonium chloride (100 mL) and extracted with ethyl acetate (3×50 mL). The combined extracts were washed with saturated aqueous sodium chloride (30 mL), dried over Na2SO4, filtered and concentrated. Silica gel column chromatography (EtOAc/Heptane) provided (R)-4-((R)-1-(tert-butoxy)ethyl)-3-(2-chloro-6-(hydroxymethyl)pyrimidin-4-yl)oxazolidin-2-one (0.220 g, white solid) in 60% yield. 1H NMR (400 MHz, CDCl3) δ 8.18 (s, 1H), 4.77-4.72 (m, 3H), 4.66 (dd, J=9.4, 2.9 Hz, 1H), 4.48 (m, 1H), 4.41 (m, 1H), 2.83 (m, 1H), 1.26 (s, 9H), 1.03 (d, J=6.6 Hz, 3H). MS m/z 330.1 (M+H)+; Rt-0.86 min.

1. customThe ice bath was removed
2. customThe reaction was quenched with saturated aqueous ammonium chloride (100 mL)
3. extractionextracted with ethyl acetate (3×50 mL)
4. washThe combined extracts were washed with saturated aqueous sodium chloride (30 mL)
5. dry with materialdried over Na2SO4
6. filtrationfiltered
7. concentrationconcentrated