反应详情

A solution of methyl 4-oxotetrahydro-2H-thiopyran-3-carboxylate (3.00 g, 17.2 mmol) in THF (57 mL) was stirred at 0° C. Sodium borohydride (1.30 g, 34.4 mmol) was added and the resulting mixture was stirred at ambient temperature for 4 hours. The mixture was thermally stabilized with a water bath and carefully quenched with 1N aqueous HCl. The reaction mixture was then diluted with water and extracted with EtOAc (2×). The combined organic extracts were washed with water, brine, dried over anhydrous Na2SO4, filtered, and concentrated in vacuo to afford the title compound. The residue was carried forward without further purification.

1. customThe mixture was thermally stabilized with a water bath
2. customcarefully quenched with 1N aqueous HCl
3. additionThe reaction mixture was then diluted with water
4. extractionextracted with EtOAc (2×)
5. washThe combined organic extracts were washed with water, brine
6. dry with materialdried over anhydrous Na2SO4
7. filtrationfiltered
8. concentrationconcentrated in vacuo