反应详情

To a suspension of (4R,5S)-methyl 5-(4-(2-methoxyethoxy)phenyl)-2-oxooxazolidine-4-carboxylate (2.30 g, 7.79 mmol) in EtOH (45 mL) was added in portions at 0-5° C. sodium borohydride (648 mg, 17.1 mmol). The reaction mixture was stirred for 0.5 h at RT and then acidified with 4M aqueous HCl (10 mL) at 0-5° C. The reaction mixture was concentrated and the product was extracted with EtOAc. Combined extracts were washed with brine, dried over MgSO4, filtered and concentrated to afford the title compound as a beige foam (1.80 g, 81%). tR=0.498 min (UPLC 1); LC-MS: [M+H] 268; Rt 0.55 min; (LCMS method 2); 1H NMR (400 MHz, CDCl3): 7.31 (d, 2H), 6.96 (d, 2H), 6.45 (br s, 1H), 5.33 (d, 1H), 5.30 (br s, 1H), 3.75-4.30 (m, 7H), 3.47 (s, 3H).

1. concentrationThe reaction mixture was concentrated
2. extractionthe product was extracted with EtOAc
3. washCombined extracts were washed with brine
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated